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Posted by: Raymond McDougall on 10.05.2019 | Filed under: Latest, Recent Mineral Updates | Comments (0)

I’ve posted the second in a series of updates with superb specimens from John S. White’s collection (click here). This update includes some interesting specimens of quartz, one to the areas in which John has specialized.

Most of you will likely know a bit about John, given that among his many accomplishments in the mineral world he is the founder of the Mineralogical Record, former curator of the U.S. National Mineral and Gem Collection at the Smithsonian Institution and author of two books and over 200 articles. I’ve written a short post about him with some great photos – hope you enjoy it! (click here) .

Quartz, Jinkouhe District, Leshan, Sichuan, ChinaQuartz, Jinkouhe District, Leshan, Sichuan, China – 7.8 cm

Quartz, Mount Malosa, Zomba District, Malawi

Quartz, Mount Malosa, Zomba District, Malawi – 4.4 cm

Quartz, Linopolis, Minas Gerais, Brazil

Quartz, Linopolis, Minas Gerais, Brazil – 8.4 cm

Quartz, Japan Law Twin, Pampa Blanca District, Huancavelica Dept., Peru

Quartz, Japan Law Twin, Pampa Blanca District, Huancavelica Dept., Peru – 5.0 cm

Quartz PS Apophyllite, Summer Storm Claim, Custer Co., Idaho, USA

Quartz pseudomorph after Apophyllite, Summer Storm Claim, Custer Co., Idaho, USA

Quartz PS Apophyllite, Summer Storm Claim, Custer Co., Idaho, USA

Quartz epimorph after Apophyllite, Summer Storm Claim, Custer Co., Idaho, USA

Quartz epimorph after Calcite, Dayu Co., Jiangxi, China

Quartz epimorph after Calcite, Dayu Co., Jiangxi, China

Quartz, Clinochlore inclusions, Tipling Mine, Ganesh Himal, Dhading District, Province No. 3, Nepal

Quartz, Clinochlore inclusions, Tipling Mine, Ganesh Himal, Dhading District, Province No. 3, Nepal – 4.6 cm

Quartz, Dolomite Inclusions, Fisher Mountain, Montgomery Co., Arkansas, USA

Quartz, Dolomite Inclusions, Fisher Mountain, Montgomery Co., Arkansas, USA – 9.1 cm

Quartz, Phantom, Hog Jaw Mine, Montgomery Co., Arkansas, USA

Quartz with phantom, Hog Jaw Mine, Montgomery Co., Arkansas, USA – 3.6 cm

Quartz, var. Amethyst, Diamond Willow Mine, McTavish Twp., Thunder Bay District, Ontario, Canada

Quartz, var. Amethyst, Diamond Willow Mine, McTavish Twp., Thunder Bay District, Ontario, Canada – 7.1 cm

200088(1)(6.5)

Quartz var. Amethyst, Piedra Parada, Mun. de Tatatila, Veracruz, Mexico – 6.5 cm

Quartz, var. Amethyst, Jacksons Crossroads, Wilkes Co., Georgia, USA

Quartz, var. Amethyst, Jacksons Crossroads, Wilkes Co., Georgia, USA – 5.8 cm

I was afraid that even short term treatment would develop addiction to Klonopin Online. They state on xanaxbest.com that it may develop only if there is big dosing and if it is not short-term. But in general it there many controversial statements over the web. As for me, I had no addiction left at all after it. I suggest all is good in small controllable doses prescribed by your doctor.

Quartz, var. Amethyst, Cristobalite inclusion, Rio Grande do Sul, Brazil

Quartz, var. Amethyst, Cristobalite inclusion, Rio Grande do Sul, Brazil – 5.6 cm

Posted by: Raymond McDougall on 09.19.2019 | Filed under: Latest, Recent Mineral Updates | Comments (0)

I’ve posted the second in a series of updates with superb specimens from John S. White’s collection (click here).

Most of you will likely know a bit about John, given that among his many accomplishments in the mineral world he is the founder of the Mineralogical Record, former curator of the U.S. National Mineral and Gem Collection at the Smithsonian Institution and author of two books and over 200 articles. I’ve written a short post about him with some great photos – hope you enjoy it! (click here)

Chabazite, Stilbite, Pune District, Maharashtra, India

 Chabazite on Stilbite, Road cut at Bavdhan, Pune District, Maharashtra, India – 6.2 cm

Elbaite Tourmaline, Momeik Township, Kyaukme District, Shan, Myanmar

Elbaite Tourmaline, Momeik Township, Kyaukme District, Shan, Myanmar – 5.4 cm

Epidote, Tormiq, Gilgit-Baltistan Road, N.A., PakistanEpidote, Tormiq, Gilgit-Baltistan Road, N.A., Pakistan – 4.3 cm

Epidote, Hachupa, Shigar District, Gilgit-Baltistan, Pakistan Epidote, Hachupa, Shigar District, Gilgit-Baltistan, Pakistan – 3.5 cm

Epidote, Maldeen, Ras Koh Mtns., Kharan District, Balochistan, Pakistan

Epidote, Maldeen, Ras Koh Mtns., Kharan District, Balochistan, Pakistan – 5.4 cm

Fluorapatite, Panasqueira Mines, Covillhã, Castello Branco, Portugal

Fluorapatite, Panasqueira Mines, Covillhã, Castello Branco, Portugal – 3.2 cm

Fluorapatite, Panasqueira Mines, Covillhã, Castello Branco, Portugal

Same specimen as above, under ultraviolet light

Fluorapatite, Kunar, Afghanistan

Fluorapatite, Kunar, Afghanistan – 6.5 cm

Fluorapatite, Kunar, Afghanistan

Same specimen as above, under ultraviolet light

Fluorapophyllite, 	Jalgaon, Maharashtra, India

 Fluorapophyllite, Jalgaon, Maharashtra, India – 7.3 cm

Fluorite on Quartz, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China

Fluorite on Quartz, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China – 10.8 cm

Hematite pseudomorph after magnetite, Payún Volcano, Altiplano de Payún Matru, Mendoza, Argentina

Hematite pseudomorph after magnetite, Payún Volcano, Altiplano de Payún Matru, Mendoza, Argentina – 5.9 cm

Hematite pseudomorph after magnetite, Payún Volcano, Altiplano de Payún Matru, Mendoza, Argentina

Hematite pseudomorph after magnetite, Payún Volcano, Altiplano de Payún Matru, Mendoza, Argentina – 6.1 cm

Hematite with Rutile, Novo Horizonte, Bahia, Brazil

Hematite with Rutile, Novo Horizonte, Bahia, Brazil – 4.5 cm

Hubnerite and quartz, Mundo Nuevo Mine, Huamachuco, Sanchez Carrion, La Libertad Dept., Peru

Hubnerite and quartz, Mundo Nuevo Mine, Huamachuco, Sanchez Carrion, La Libertad Dept., Peru – 7.6 cm

Hydroxyapophyllite, Prehnite, Fairfax Quarry, Centreville, Fairfax Co., Virginia, USA

Hydroxyapophyllite on Prehnite, Fairfax Quarry, Centreville, Fairfax Co., Virginia, USA – 15.1 cm

Ilvaite, Quartz, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China

Ilvaite and quartz, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China – 6.5 cm

Löllingite, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China

Löllingite, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China – 10.2 cm

Olmiite, N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa

Olmiite, N’Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa – 5.2 cm

Olmiite, N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa

Same specimen as above, under ultraviolet light

Pentagonite, Wagholi, Pune District, India

Pentagonite, Wagholi, Pune District, India
Field of view 2 cm

Posted by: Raymond McDougall on 06.12.2019 | Filed under: Latest, Mineral Shows | Comments (0)

 

As spring unfolds in this part of the world in mid-late April each year, it’s time for the Rochester Mineralogical Symposium!

Of course, the extent to which it’s spring in this region depends on exactly where you are – Rochester was further ahead and this year there was still lots of snow up here in Bancroft. Even so, the first beautiful signs of the new season were emerging. (It has been a cold spring – our furnaces out here have been on still, into June (!)).

IrisFinal

Rochester 2019 marked our 46th year.

If you are new to the Symposium, it’s a unique event. It brings together professionals and amateurs, and a complete range of subjects in specimen mineralogy. It is collegial and friendly, meant for collectors and those who love to learn about minerals. The RMS prominently features What’s New in Minerals each year. It is also a mineral show with excellent dealers set up and open when the talks are not on. It may sound scientific and formal, but Rochester is perhaps the most welcoming and inclusive mineral gathering I know. It’s a time for hanging out and having a good time with mineral friends, new and old (of course new people come every year, and if you’ve never been, make 2020 your first!). It’s possible a drink or two is shared among us, and a few mineral songs are always sung.

Rochester is not meant to be a strictly scientific symposium – it is meant for anyone who wants to learn more about minerals. At Rochester, many of the best-known mineral people of our time, mineralogists, curators, collectors (including beginners) and students, all share and learn together.

We had a stellar cast of speakers this year! We began with three talks (Thursday night and Friday morning) about crystals, given by three friends who have been experts in crystallography for a long time.

John Jaszczak, Pete, John Rakovan at the Rochester Symposium, 2019

Three Crystal Rogues. From Left, John Jaszczak, Pete Richards and John Rakovan.

These three talks began with some fundamental questions and concepts, progressed into distortions and ended up teetering on the edge of the crystallography universe – I lightheartedly told our speakers they were taking us on a journey, From Cubes to Tubes.

Thursday Night

John Rakovan started us off with Crystal Growth: A Primer. He explored why it is that crystals form flat faces. It’s such a fundamental question, I’ve never thought to wonder about it (!). It’s easier to assume that we have an understanding of basic crystals if we understand the crystal classes. As a general rule, crystals have flat faces, at a macro level. However, at a microscopic level, crystal faces often display topography that can help us to understand how they grew. The short answer about flat faces is that the mechanism of growth prefers to add thin layers as a crystal grows, completing a flat layer and then beginning the next. The longer explanation as to why that is has to do with the way atoms bond to surfaces – an atom will bond much more easily if it can attach not only to the flat surface underneath, but also a step/bench on one side. If thought of as a cube, if the bottom and one side can be attached, the atom is much more likely to be bonded and stay in place, as is the next, and the next, until the layer has crept all across the crystal. Once a new layer starts, the process is repeated.

Slide5

Layered growth visible inside a Panasqueira fluorapatite crystal,
both on a macro scale and an incredibly micro scale.
John Rakovan specimen and photo.

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A beautiful illustration of layers on a pyrite crystal – this crystal surface is relatively flat
but with the right illumination, one can see the stepped growth pattern.

Friday Morning

R. Peter Richards opened Friday morning with a talk on Distorted Crystals. Many of you know Pete is often involved in unravelling some of the most interesting crystallographic mysteries in Mineral World. His presentation took us away from typical flat-faced, simple geometric crystal forms, into the realm of distortions of various kinds. Pete is an engaging speaker and this was a great talk!

Screen Shot 2019-04-20 at 1.13.23 PM

John Jaszczak then led us to the brink of the crystallographic abyss, with Criminal Minerals: Investigating Minerals that Break the Law. A subject that could easily descend into a very technical place and lose an audience, but there was no worry of that! Why? Well, other than the fact John is a great presenter in any event… he chose to explain the concepts using photographs of parked cars. Answering once and for all the age-old question (at least I’ve always wondered) can crystallographic issues be solved with parked cars…

Beginning with the illustration of a crystal on the right hand side of this slide…

 

Slide2

Explaining, for example, that complications can result in a crystal’s growth when something shows up where it should not, within a crystal’s lattice…

Slide3

Issuing a wanted-list for criminal minerals the offence of incommensurate modulation…

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… you might feel like “incommensurate modulation” is a good technical place to become lost… nope, turns out parked cars can illustrate almost anything, as this one example shows.

Slide5

OK, one _mineral_ example in photographs. This is cylindrite, a classic, with its cylindrical crystal morphology:

Slide6

 

Friday Afternoon – Contributed Papers in Specimen Mineralogy

Friday afternoon at the RMS, we have Contributed Papers in Specimen Mineralogy (we typically refer to it as the “Technical Session”). Our coordinator of this session and editor of the abstracts is Sarah Hanson – she runs the call for papers, and coordinates everything to put this program together. Our call for papers is usually out in December, but start thinking about it now – if you have a paper you’d like to contribute, we’d love to see your submission this year.

The session itself is moderated by Dr. Carl Francis. Friday afternoon is packed with great 15-minute talks on a range of topics, some completely specimen-oriented, some more mineralogical. I never write at length in these blog posts about the Technical Session talks, because the abstracts from the talks are published during the year in Rocks and Minerals magazine (don’t forget to watch for them!) and they are published in the RMS Program Notes (see the links section at the end of this blog post).

However, I do feel strongly about writing a just bit about it. The Technical Session is one of the features of the RMS that makes it unique, with professionals and amateurs all contributing. For collectors, there is a lot of interest in these talks – sometimes about rare or new minerals or finds, sometimes about localities, sometimes about scientific work done to establish fakes in Mineral World. We had a high percentage of truly excellent talks given by students. The group from the Department of Geology and Environmental Earth Science, Miami University, Oxford, Ohio did a particularly outstanding job. Too often, we look around Mineral World and see fewer young people than we’d all like – these students represent a bright future for mineralogy and the science that underpins everything we enjoy in Mineral World.

Friday Night

On Friday night, Terry Huizing gave “The Variety and Appeal of Calcite”. Terry has a superb calcite collection, and this talk was full of photographs of wonderful calcite specimens. He spoke about calcite colours and crystals – with Terry’s presentation, anyone could be tempted to specialize in collecting calcite.

Terry made one point that really struck me – it’s something I had never known about calcite, and I thought it was an awesome bit of mineral learning. Many people know that calcite is known for its huge variety of crystal forms, as over 800 have been described. It’s mind-boggling. I love poring over incredible intricate calcite crystal drawings in Goldschmidt and other publications. Terry pointed out that all of these complex crystals we see are combinations of two or more of only five forms, along with any twinning that may be present: the pinacoid, prism, rhombohedron, scalenohedron and dipyramid. (!) I loved learning that! Terry illustrated these, including some Jeff Scovil photos in the following slides:

Calcite - Pinacoid and Prism

 

Calcite - Rhombohedron

 

Calcite - Scalenohedron

 

Calcite - Dipyramid

Terry’s was mostly a talk comprised of great photos of beautiful specimens, including this wonderful piece.

Rhombohedra and dipyramid

Saturday Morning: What’s New in Minerals and Localities

Saturday morning is always dedicated to What’s New in Minerals – it has been at the heart of the Symposium from the early days, and it is an absolute highlight every year. We divide the morning into Parts I and II.

Jeff Scovil has been leading Part I for 25 years (time flies!), and even after Friday night’s fun takes us all well into the night, this talk is packed every year. Of course it is: this is the world’s great and famous mineral photographer showing us fantastic photos of the most remarkable new things he’s shot over the past 12 months. The jaw-dropping specimens and awesome photos mean this part is full of oooohs and aaaahs. Here are a few highlights from Jeff’s Part I this year:

CaliforniaGold

Gold, Colorado Quartz Mine, Mariposa, California – 2.7 cm high
Dave Varabioff specimen, Jeff Scovil photo

Cummengeite

Cummengeite, Curuglu workings, Boleo Mine, Santa Rosalia, Baja California Sur, Mexico – 1.8 cm
Peter McGaw specimen, Jeff Scovil photo

PinkEuclase Euclase, Brumado Mine, Bahia, Brazil – 1.7 cm
Alex Schauss specimen, Jeff Scovil photo

MetaAutunite

Meta-Autunite, Golconda Mine, Governador Valadares, Doce Valley, Minas Gerais, Brazil – 2cm
Marini & Gobin specimen, Jeff Scovil photo

EpidoteBowtie

Epidote, Kharan, Balochistan, Pakistan – 3.2 cm
Ziga Minerals specimen, Jeff Scovil photo

IrelandFluorite
Fluorite, Joe Larkin’s Quarry, Shannapheasteen, Co. Galway, Ireland – 8.5 cm
Dan Weinrich specimen, Jeff Scovil photo

SceptrePetersenMountain

Quartz sceptre, Petersen Mt., Washoe, Nevada – 25.6 cm
Jim and Gail Spann specimen, Jeff Scovil photo

Part II is led by John Betts – he coordinates the program team and assembles all of what’s new into slides. John then presents some of the material, while other team members speak about the contributions they’ve assembled. This year’s team included Jim Nizamoff, Mark Jacobson and me. Part II is great session, bringing together finds and workings from around the world with photographs of localities and specimens. Of course, our goal is to bring new specimens and stories to light!

I won’t go too far into this, as we covered a lot of ground, but here are a few photos to give a little glimpse, and I’ll finish with a particularly interesting story from Mont St. Hilaire.

John covered finds from all over, and he included some rather interesting new finds from Maine:

Slide1

 

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The new finds I presented for What’s New have mostly already been posted elsewhere here on my website, including under What’s New Blog and New Specimens.

For example, the beautiful new fluorite specimens from Madagascar:

Fluorite, Mandrosonoro, Ambatofinandrahana, Amoron’i Mania, Madagascar

Fluorite, Mandrosonoro, Ambatofinandrahana, Amoron’i Mania, Madagascar – 11.0 cm
Mary Holdgraf specimen

On a very different note – a new identification – we had a great contribution from Lázló Horváth (thank you Les!). This story goes back to the 2013 approval of marshalsussmanite as a new species (an intermediate species between serandite and pectolite) and the subsequent 2014 Rocks and Minerals magazine article about it. Les wondered if perhaps some of the serandite specimens from Mont St. Hilaire might in fact be marshalsussmanite. In cooperation with the Canadian Museum of Nature, a survey of various Mont St-Hilaire serandites was commenced using several techniques, and a number were found to be in the marshallsussmanite range. Notably, one of them was from the major 1981 find, often associated with Ernie Schlichter. Single crystal structure analysis confirmed that the 1981 bladed serandite was marshallsussmanite. However, there’s more to the story…

This single crystal structure analysis also confirmed that the mineral named marshalsussmanite is identical to the mineral schizolite, described from Greenland in 1901 and unnecessarily dropped from the valid minerals list in 1955. There was no official discreditation at the time, because this predated the establishment of IMA. Now, owing to the priority of schizolite, marshallsussmanite has been discredited and the mineral is schizolite.

So where does this leave Mont St-Hilaire serandites? Well, there is no simple answer. It seems that so far, the 1981 Ernie Schlicter-find specimens tested are all schizolite. Initially, it had been thought that perhaps the thin, bladed habit might be reliable as a diagnositc indicator, but this has proven to be too simple and unreliable a conclusion. Ongoing study of specimens is being conducted by Tony Steede at the Royal Ontario Museum lab, and he has found crystals in the thin, bladed habit that are in fact serandite. It seems that the only way to know is to have every specimen fully analyzed. Further discussion of the schizolite story and findings are expected in an upcoming article by Peter Tarassoff in Rocks and Minerals magazine, and also in the highly-anticipated upcoming new book on Mont St-Hilaire (more on that below).

This is a confirmed schizolite:

serandite4-UL-0154

Schizolite with analcime and natrolite, Mont St-Hilaire, Quebec – 18 cm
Laval University specimen, Laszlo Horvath photo

Saturday Afternoon

Saturday afternoon, we began with “Mineral Collection Matters”, by William Severance. Bill has shared specimens from his collection with us in the display room at the Symposium each year for as long as I can remember! He gave a great talk about mineral collecting, illustrated with specimens from his collection. One of my favourite aspects of mineral collecting is visiting mineral friends and going through their collection together, hearing the stories behind each piece. Bill’s talk was very much like that, with provenance of the specimens and other background, lots of collecting wisdom gleaned over the years, and some fun stories. I’ll share the one that was my favourite laugh (and I was certainly not alone):

Bill was visiting with highly-accomplished Tucson collector Jim Blees, and they had been spending time going through Jim’s collection. Bill recalled what Jim said (and we can give a small tip of the cap to Apocalypse Now):

“A great mineral specimen always comes up at the worst possible time. The house needs a new roof. Your wife needs a new washing machine. Your daughter needs braces. At that moment, you’re either a collector or you’re not. Sell the house! Sell the wife! Sell the kid! Buy the rock!“

This talk was a treat visually as well, featuring many of Jeff Scovil’s photos featured in Bill’s chapter in the Mineralogical Record Supplement, Mineral Collections of the American Northeast. (Jul/Aug 2016).

Dioptase

Dioptase on calcite, Tsumeb Mine, Tsumeb, Namibia – 2.7 cm
William Severance collection, Jeff Scovil photo.

Azurite

Azurite, Tsumeb Mine, Tsumeb, Namibia – 9.5 cm.
William Severance collection, Jeff Scovil photo.
Ex Sid Peters specimen. Included in Julius Zweibel’s McDole
Trophy exhibit (1977). From Marshall Sussman (2003)

Calcite on Copper

Complex calcite twin over calcite phantom on copper, 6.4 cm, from the Copper Falls mine, Owl Creek fissure, Keweenaw County, Michigan.
William Severance specimen, Jeff Scovil photo.
Ex Clarence Bement collection (1900). Ex I. P. Scalisi collection.
From Stuart Wilensky (1999). Pictured in American Mineral Treasures (2008).

To close out our Saturday afternoon, Les Presmyk took the podium. Les has been a generous contributor in many capacities throughout Mineral World, and we were thrilled to have him back in Rochester. For those of you who might not know (or know of) Les, he has a superb collection of Arizona minerals, and has given presentations on a variety of Arizona mineral subjects. On Saturday he gave a talk he had just finished putting together, “Arizona Sulfates”.

I was intrigued by this talk as a subject matter, because when one thinks of Arizona, one does not usually jump to thinking of sulfates. Turns out there are lots of great sulfate minerals in Arizona! Far more species than only he ones that came to mind for me. Here’s just a glimpse (these are classics…):

Slide01

 

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Slide13

Spangolite, Czar shaft, Copper Queen Mine, Bisbee, Warren District, Cochise Co., Arizona

Sunday Morning

Sunday we capped off the 46th RMS with two more excellent talks.

Chris Stefano opened with his talk, “Lucius Lee Hubbard: One of the Copper Country’s Greatest Mineral Collectors”. Hubbard was a true Renaissance man, and he was passionate about minerals. Chris told Hubbard’s story with far more than mineral specimens – he included historic photographs and Hubbard’s original correspondence, working with Hubbard’s descendants. The Hubbard collection ultimately contained many exceptional specimens, including superb Michigan copper country specimens, and it was one of the three private collections that formed the foundation for the collection of the A.E. Seaman Mineral Museum of Michigan Technological University.

Stefano Copper

Copper, Keweenaw Peninsula, 23 cm. Michigan Mineral Alliance specimen (UM 1674).
Christopher Stefano photo.

Stefano Silver

Silver, Cliff Mine, Keweenaw Co., Michigan – 10 cm A.E. Seaman Mineral Museum specimen (LLH 508)
John Jaszczak and Christopher Stefano photo.

And for our grand finale, Les Presmyk presented “Collecting Arizona Minerals: 150 Years of Mining, 100 Years of Statehood, and My 50-Year Journey.” This talk was awesome, featuring historical photos and packed with photos of killer specimens.

Wulfeniteonquartz.RedCloudMine.Scovil2011-04-0081

Wulfenite, Red Cloud Mine, Trigo Mountains, La Paz Co., Arizona – 4.3 cm
Les and Paula Presmyk specimen, Jeff Scovil photo.

New Books!

Just a quick mention of three new books that are coming soon and were talked about a lot at the RMS – they are of particular interest to many of the people who attend RMS (and of course many more throughout Mineral World). I can’t wait for my copies of all three! Links for all of these are in the links section at the end of this blog post.

First, the project from George Robinson, Jeff Chiarenzelli and Michael Bainbridge, Minerals of the Grenville Province: New York, Ontario and Quebec should be out literally any day now (it can be ordered through Schiffer Books and will be on amazon… OR… if you will be at the Bancroft Gemboree this year (August 1-4, 2019), there will be a launch and signing, at the Bainbridge Photography booth (#145), and George Robinson will be there for a signing on Saturday, August 3, from 1:00-4:00 pm).

GrenvilleBook

The new book on Mont St-Hilaire is almost here too! Mont Saint-Hilaire: History, Geology, Mineralogy by Lázló Horváth, Robert A Gault, Elsa Pfenninger-Horváth and Glenn Poirier (ed. R.F. Martin) will be released in September 2019.

MSH COver

And the third is the highly-anticipated book about Bill Pinch and his collection: The Pinch Collection at the Canadiane Museum of Nature, by Michael Bainbridge (eds. Gloria Staebler and Tom Wilson). It will be published in fall 2019 and the link for pre-orders is in the link section below. Bill was very involved with the preparation of this book, and the collection described has been regarded by many as perhaps the finest private collection ever assembled. With photography by Michael Bainbridge, this will be an amazing work.

Displays

Every RMS, we have great displays in the Exhibit Room and this year was no exception. Some are contributed by museums and many are contributed by collectors attending the RMS.

I say that it was no exception, but it _was_ exceptional in one respect. We have now retrofitted all of the RMS display cases with super new LED lighting. Thanks to Brian McGrath for doing all of the hard work on this – they looked awesome! (A side note, if you are interested in lighting for your own display cases, these are from Graham Sutton, with contact information in the links section below).

Here are a few glimpses from among the many great displays.

Terry Huizing assembled a case of beautiful calcite specimens in support of his talk. Some great eye-candy here!

TerryHuizingCase

John Betts’s display, “Recent Additions”, included many sweet specimens.

JohnBettsCase

I could have chosen many for a closeup, but I chose this gorgeous chalcocite:

Chalcocite, Bristol Copper Mine, Bristol, Connecticut
Chalcocite, Bristol Copper Mine, Bristol, Connecticut – 5 cm (crystals to 2.6 cm)
From the private collection of Ex. Dr. Hans-Jürgen Wilke (1925-2014) of Eppertshausen, Germany, No. 193

The Mineralogical & Geological Museum at Harvard University brought a display of great calcite specimens:

HarvardCalciteTwins

Scale: specimen on the right approx. 4 cm.

Canadian collector George Thompson brought a case, “Canadian Quartz”, with many distinctive specimens from localities that are less commonly seen:

GeorgeCanadaQuartz

Don Dallaire had many excellent specimens in his case dedicated to the Minerals of New Hampshire – I thought this was truly exceptional quality for cordierite:

CordieriteDallaire

Cordierite, Richmond Soapstone Quarry, Richmond, New Hampshire – approx. 5 cm

Bob Morgan’s case was dedicated to Epitaxy – here’s a great albite on orthoclase specimen:

BobMorganEpitacticFeldspar

Scale: approx. 10 cm tall

Carl Francis brought a case of killer quartz specimens from Switzerland:

CarlFrancisCase

A couple of close-up photographs from Carl’s case – these are wonderful crystals:

CarlFrancisGwindel

Quartz gwindel, Fedenstock, Uri, Switzerland – approx. 9 cm

CarlFrancisLargeQtz

Quartz, Rhone Glacier, Wallis, Switzerland – approx. 25 cm

Fun

As I write every year in my RMS posts, a lot of the best of Rochester occurs beyond the talks – in the halls, over meals, and on the 4th floor (the dealer floor, open when talks are not on). Socializing continues well into the morning hours each night, and includes a few traditions – among others, the not-to-be-missed Saturday night mineral songs with David Joyce. (I assume most have heard Dave’s mineral collecting and mining tunes, but if not, I’m including a link below). Somehow, I had so much fun that I forgot to be taking pictures to include here. Oops.

We have a lot of fun together at Rochester – and if you’ve never been, I hope you’ll come next year and be a part of it with us!

RMS 2020

We have another great lineup of speakers shaping up – the dates are April 23-26, 2020. Our 2020 speakers will include Calvin Anderson, John Betts, David Joyce, Harold Moritz, Tony Potucek, Jeff Scovil and Terry Wallace.

RMS on Facebook

The Rochester Mineralogical Symposium is now on Facebook (here) (thank you Michael Bainbridge!). Our Facebook page is one good way to keep up with us – feel free to visit and give it a Like!

Until Next Year…

The Rochester Symposium is a great event, that has seen many of Mineral World’s most prominent names as contributors. At the same time, the Symposium continues to embrace contributions from all levels in mineral collecting – it simply would not be what it is without everyone who contributes.

Thank you to all of our amazing speakers this year! And thanks to our speakers and photographers for all of your help with photos to share through this report.

Of course, the Symposium could literally not happen without the dedicated efforts of the team who put it together – particularly Carl Miller, our registrar. Carl is The Man. Sarah Hanson does it all to put together the technical session and coordinate the abstracts. Tom White is our technical coordinator, insuring that all the presentations and recordings run without a hitch. Many thanks to all on our committee and those helping in the background year-round, including John Betts, Steve Chamberlain, Dan Imel, Betty Fetter, Carl Francis, Bruce Gaber, Brian McGrath, Bob Morgan, Susan Robinson, and Quintin Wight. Thanks to Paul Dudley for technical and website support. We also have a host of people helping us at the RMS and behind the scenes, including Mike Avery, Michael Bainbridge, John Diaz, Charlene Freundlich, Fred Haynes, Mark Jacobson, Jim Nizamoff, Ed Smith, Laurie Steele Sperber, Dan Sperber, Gloria Staebler, Lee Tutt, and Ken Wolf I sure hope I haven’t missed anyone!

Links and References

If you are seeking links for anything mentioned above, some of these may be of interest:

Our amazing professional mineral photographers (who – of course – take photos of private collection specimens for individual collectors): Jeff Scovil and Michael Bainbridge

David K. Joyce has written – and plays and sings, of course – the soundtrack for so many great times in minerals. The mineral tunes are available on itunes (enter David K Joyce in your itunes search window) or the CD is available from Dave – if you’d like to hear them, here is the page where you can listen.

If you are interested in display lights for your collection, Graham Sutton’s company, It’s West Display & Lighting, has great lighting solutions. We love the new RMS display case lighting.

Valium Online is the best benzo for long term, chronic anxiety and panic disorder. However, the hardest thing is if you ever have to stop it without switching to another benzo. The 2 side effects I had were the occasional headache associated with tiredness. ativanshop.com has the longest half life of any benzo and that is arguably why it is the hardest to stop after long term use. Be careful.

Here are links to the books:

Minerals of the Grenville Province (Click here) Or, as mentioned above, come to the Bancroft Gemboree and visit Michael Bainbridge. [NB as of the time of publishing this post, the only actively-shipping listing is the direct link through the publisher]

Mont Saint-Hilaire (Click here) [NB at the time of publishing this post, SP 14, Mont Saint Hilaire, was not yet listed at this page, but the book launches in September and it will be at this link!]

The Pinch Collection at the Canadian Museum of Nature (Click here)

When they are online, the 46th RMS Program Notes will be posted online here.

 

Posted by: Raymond McDougall on 01.05.2018 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve posted some excellent new specimens from the Conselheiro Pena area in this Brazil Update (click here) – a small number of spessartines from the famous 2003 pocket at the Navegadora Mine, and some fine crystals of wodginite from the recent find at the Itatiaia Mine.

Spessartine

These spessartines are from the famous March 2003 pocket at the Navegadora Mine, regarded as the finest garnet pocket found in Brazil. The Navegadora Mine exploits a pegmatite and produces feldspar for commercial purposes – It is not mined for specimens, and this pocket was unique. In an article in Rocks and Minerals (“Spessartine from the Navegadora Mine, Minas Gerais, Brazil” Vol. 84, Jan-Feb 2009) author John White discusses how these spessrtines formed. While etching was involved, the specific mechanism that resulted in the final forms of these etched crystals remains a mystery.

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil – 4.5 cm

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil
Close-up of the above specimen, field of view cm

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil – 4.8 cm

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil – 3.5 cm

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil – 3.5 cm

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil – 3.5 cm

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

Spessartine, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil – 2.6 cm

Wodginite

Wodginite is not a common mineral, and it is quite difficult to acquire good crystals. These ones are from a 2017 find that produced a relatively small number of specimens. Their idetification has been confirmed at the University of Arizona, and, along with subsequent EDS work, it has been established that of the various members of the wodginite group, they are wodginite.

When initially found, they were sold within Brazil with incorrect locality information. This is often done to protect an original source soon after a find, although it’s not clear whether that was the reason in this case. In any event, they are confirmed to be from the Itatiaia Mine, and the original attibution of early specimens to “Linopolis District, Divino das Laranjeiras” should be corrected.

 

 

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 3.5 cm

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil
Termination of the same crystal in the photo above
Approx 3 cm as shown

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 3.3 cm

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 3.4 cm

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 1.6 cm wide

Posted by: Raymond McDougall on 07.26.2017 | Filed under: Latest, Mineral Shows | Comments (0)

 

In the heart of France’s Vosges Mountains, each June, Mineral World assembles at Sainte-Marie-aux-Mines, Alsace, for what is always a great mineral show.

Alsace is a beautiful place, and this sure is a beautiful time of year.

Saint-Hippolyte, Alsace, France

Saint-Hippolyte, Alsace, with the Chateau du Haut-Koenigsbourg on the crest of the hill in the background.

SteMarie

Everywhere you look, Sainte-Marie-aux-Mines is full of blooms in late June.

Lavender

Lavender is a common sight and scent in Alsace at this time of year.

Ste. Marie’s mining history dates to the 16th century. Located in the Val’D’Argent (“Valley of Silver”), the town was the hub for a vast number of mining operations over a few hundred years that ultimately left approximately 20,000 km of tunnels under and inside these valley hills.

SteMarieHistory

Depiction of historic mining practices in the area of Sainte-Marie-aux-Mines

If you are newer to the website and might not have seen prior Ste. Marie reports, I’ve written a bit more on the history in other years’ posts – there are some good photos as well, for example in the Sainte-Marie-aux-Mines 2015 post (click here).

The Show

For a few days each year, this town is transformed, as mineral and gem people from every corner of the globe get together. The centre of town becomes its own little community with tent “streets” and alleyways in all directions.

Sainte-Marie-aux-Mines Mineral Show

One of the many tent streets, with the Theatre venue in the background.

Although it is a gorgeous time of year in Alsace, 2017’s European heat wave made for some scorching days at the show. One popular way to beat the afternoon heat was the misting station they had installed for the show at the central hub-intersection, by the theatre.

Misting Towers

It was a great idea. Unfortunately for me, I was always carrying flats full of minerals when I passed this intersection… (cardboard mineral boxes and misting don’t mix!)

Of course, hot days can’t stop the quest… and there were some great finds this year.

There has been a large new find of red zircons from the Astor Valley, in Pakistan. A locality that has sporadically produced small amounts of material in recent years, this find produced a large number of pieces. However, from all I have seen, fine zircons are few. There are two key reasons for this. First, the zircons are enclosed within solid rock with other hard constituent minerals, such that many zircons were broken when they were collected. Second, and a much more prevalent issue, the zircon crystals seem to have formed more or less contemporaneously with most of the other minerals in the deposit – feldspar, biotite mica, and pyroxene – and as a result, most of the zircon crystals are not fully developed. Instead, most zircon crystal growth was interrupted by the growth of these other minerals, and therefore most zircons are simply incomplete, or malformed. And yet, among the well-over 1000 pieces I went through, there were a few super crystals. The colour ranges from hues of wine-red to intense, vivid deep red, with some occasional gradation to much lighter hues, almost colourless.

I’m including a few photos here, and to see more, I’m including a link below these.

Red Zircon, Astor Valley, Gilgit-Baltistan, Pakistan

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan – crystal 3 cm across

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan – 2 cm crystal

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan – field of view 2 cm

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan – field of view 3 cm

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan – field of view 2 cm

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan – field of view

These zircon crystals fluoresce yellow under shortwave ultraviolet light.

Zircon, Astor Valley, Gilgit-Baltistan, Pakistan

To see more of these zircon specimens, click here.

As a related aside, if you’ve read my mineral show posts before, you will likely have seen that I joke about shows as “urban field collecting”. So here is an example of one kind of urban field collecting. The Astor Valley red zircons arrived in metal shipping containers, and large numbers were as yet still packed up. Meaning… a few hours in the hot sun… I unpacked each and every zircon from this shipment, never knowing whether the next piece in hand might be a worthy specimen (and usually it was not!).

Urban Field Collecting

This sure isn’t so different from collecting on mine dumps: (1) Each piece you have in hand has no direct relationship to the one next to it. (2) Any piece can be great. and (3) If you don’t keep going through as much material as humanly possible, you will miss the good specimens. So, on you go…

Next, from the well-known locality, Paprok, Afghanistan, there has been new production of some excellent spodumene crystals. Many are bicoloured, light pink and green, while some are one colour or the other. Some of these are very nicely formed!

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan – 5.0 cm (photographed section)

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan – 4.5 cm (photographed section)

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan – 5.0 cm

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan – 4.0 cm (photographed section)

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan

Spodumene, Paprok, Kamdesh District, Nuristan Province, Afghanistan – 2.5 cm (photographed section)

A “new” find of clinochlore has come from Arrondissement Diako, Mali. I say “new” because they are new to us, but were actually collected a while back. The information relayed to me is that these were found six years ago by a geologist prospecting for economic ore minerals. The clinochlores were not considered specimens by the prospector, but have now been tracked down. A very soft mineral, excavated by a commercial prospector, you can imagine that most from the lot are not fine mineral specimens at all, but a very few are really nice, particularly under good lights, where the green becomes visible. Good clinochlore specimens are really not easy to come by, so I was really pleased to find these.

Clinochlore, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali

Clinochlore, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali – 3.3 cm

Clinochlore, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali

Clinochlore, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali – 4.0 cm

Clinochlore, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali

Clinochlore, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali – 2.5 cm crystal

A few years ago, I managed to acquire a few hematite specimens from just outside the town of Sainte-Marie-aux-Mines itself. These are the hematites from Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France. I’ve tracked down a few more. Specimens from this locality were collected in the 1970s and 1980s. These are really great, distinctive hematite specimens, from a now classic locality.

Hematite, Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France

Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France – field of view 4.0 cm

Hematite, Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France

Hematite with quartz, Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France – 5.8 cm

Hematite, Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France

Hematite, Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France – 8.7 cm

Hematite, Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France

Hematite, Brezouard Massif, Sainte-Marie-aux-Mines, Haut-Rhin, Alsace, France – field of view 5.0 cm

The Show Exhibits

As always, the exhibits were fantastic. This year’s theme was Minerals and Volcanism, with cases dedicated to mineral specimens from volcanic deposits around the world. Of course, they featured many basalt-hosted specimens from localities around the world. Some of these are very well represented by specimens and photographs throughout the world – examples include the Deccan Traps in India and the beautiful amethysts from Artigas, Uruguay – while others are localities and minerals that we rarely see represented. With one exception, I’ve chosen to include photos of a few of the latter for this post. To me, that is often the most amazing part of the Ste. Marie exhibit experience.

Beginning with France, I loved the way this particular display was set up. It was dim, with LED illumination under the five specimens (four corundum crystals and an orange zircon), and did they ever jump to life!

Exhibit 1

From top left, clockwise: Two green-blue corundum crystals from Espaly-Saint-Marcel, Haute Loire (Collection of the Museum of Natural History, London);
Orange zircon from Riou Pezzouliou, Espaly-Saint-Marcel, Haute Loire (Collection of Alain Martaud);
Blue corundum, var. sapphire, from Riou Pezzouliou, Espaly-Saint-Marcel, Haute Loire (Collection of Alain Martaud); and
Blue corundum, var. sapphire, from le Coupet, Haute Loire (Collection of Louis-Dominique Bayle)

This is one of the world’s finest (if not the single finest) specimens of phillipsite. The cruciform twin at the top is about 2.5 cm, and the crystals are sharp and lustrous.

Phillipsite, Alter Stein Quarry, Allendorf, Hessen, Germany - Andreas Leinweber Collection.

Phillipsite, Alter Stein Quarry, Allendorf, Hessen, Germany (Collection of Andreas Leinweber)

This next one is not a rare mineral, but a really classy specimen from an unfamiliar locality.

Aragonite

Aragonite, Gergovy, Puy de Dome, France (Collection of Alain Martaud)

While we’re in Europe, a couple of true classics from Italy:

These are just gorgeous crystals for nepheline.

Nepheline

Nepheline, Mt. Somma, Campania, Italy – crystals to about 1 cm
(From the Struver Collection, 1888, in the Collection of the Museo Universitaria di Scienze della Terra, Italy)

And this vesuvianite is sharp with great lustre.

Vesuvianite

Vesuvianite, Latium, Italy – crystal about 1 cm
(From the Spada Collection, in the Collection of the Museo Universitaria di Scienze della Terra, Italy)

With apologies for the very poor photograph quality (white zeolites really need extra lights and/or reflectors), I wanted to include this specimen despite the photo, because the piece blew me away. It’s a superb analcime from any locality, but check out this locality!

Analcime

Analcime, Kerguelen Islands, French Southern and Antarctic Lands – crystals to 5 cm
Collection of the Museum of Natural History, London

I mentioned one exception for a specimen from a more commonly represented locality, and this is from the abundant deposits in Rio Grande do Sul. It is spectacular! It glistens and sparkles throughout the cavity and was a favourite for many at the show.

Amethyst

Quartz, var. amethyst, Rio Grande do Sul, Brazil – approximately 30 cm
Collection of the National Museum of Natural History, Paris.

And finally I’ll end with what was a great case, a display of specimens from volcanic deposits from the collection of French mineralogist René Just Haüy, generally regarded as the “father of modern crystallography”. These specimens are from the National Museum of Natural History in Paris.

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Found on antibioticspro.com that only with some antibiotics it is strictly prohibited to drink alcohol like metronidazole, tinidazole, trimethoprim and some more. But that for many others it can be actually ok, specially that few glasses of red wine can be actually even good. Can anyone prove this? Any personal experience?

ReneJustHauy

Until next year, so long for now to the beautiful towns and gardens of Alsace…

Window boxesSaint-Hippolyte, Alsace

Hollyhock

Saint-Hippolyte, Alsace

TwoTowers

Saint-Hippolyte, Alsace

Posted by: Raymond McDougall on 06.13.2017 | Filed under: Latest, Mineral Shows | Comments (0)

 

I’m publishing this one a bit later than I expected this year, but I hope you will enjoy the content all the same. And for those of you who are in hot summer places, perhaps harking back to northern spring will feel refreshing…

Each year, I personally love the arrival of the Rochester Mineralogical Symposium for two reasons.

First, it’s my favourite annual event in Mineral World. And second, the RMS always marks the arrival of spring out here in the Bancroft woods, with nicer temperatures and the occasional chance to drive with the windows down again.

So, in this photo taken the day before the Symposium, I’ll leave it to you as to whether Emery’s happy expression was about hanging out the window and soaking up the early spring sunshine or the arrival of RMS 2017…

Emery Window

…but my own happiness that day was about both!

If you’ve attended the RMS, you’ll know why it’s special. The Rochester Symposium is a unique event. It brings together professionals and amateurs, and a complete range of subjects in specimen mineralogy. It is collegial and friendly, meant for collectors and those who love to learn about minerals. The RMS prominently features What’s New in Minerals each year. It is also a mineral show with excellent dealers set up and open when the talks are not on. And the RMS is a true mineral community with great cameraderie – it’s a time for hanging out and having a good time with mineral friends, new and old. It’s possible a drink or two is shared among us, and a few mineral songs are always sung.

If you haven’t yet come, I hope you’ll join us next year. Rochester is meant for you as much as anyone! You can reserve the dates right now: April 19-22, 2018.

2017 RMS Presentations

Opening – Bill Pinch

We began the 2017 (44th) RMS acknowledging the passing of our friend Bill Pinch, the great mineral collector who began the Symposium 44 years ago. As this had happened only three weeks before the Symposium, this was a hard period for Bill’s family and friends.

At RMS 2017, the Program Notes began with an In Memoriam, written by Chairman Steve Chamberlain – I have reproduced it in full, below. Bill’s website hosts both a great In Memoriam by Mark Feinglos (which he wrote for The Mineralogical Record) and some other great links – I include the link below, under Links and References.

Steve also announced that RMS 2018 will be dedicated to Bill’s memory and, in celebrating him, we will have a Bill Pinch theme. In addition to a presentation about Bill himself, there will be talks on the subjects he loved most during his collecting career, including Tsumeb, rare minerals, and collecting fine minerals.

Bill was a good friend and a kind mentor to me. What we enjoyed most – as I’m sure was true with so many of his mineral friends – was losing all sense of time together talking about minerals. And so that’s what we all did at RMS 2017 – we enjoyed each other’s company and immersed ourselves in minerals.

The King of Tides: Nova Scotia’s Bay of Fundy

I gave the first talk of the 44th Rochester Symposium, about the minerals of the Bay of Fundy. For those of you who know my website, you will have seen the articles I have posted on the blog (Collecting the Bay of Fundy, and Collecting on the Islands). Although the RMS presentation was about the minerals from the classic Bay of Fundy localities discussed in the blog posts, I had a different goal in putting it together. My goal was to share not only the story and scenery, but specifically some of the top specimens, to show how great they can be. Those specimens reside primarily in a few Canadian collections, and so there was a collaborative effort to track them down and photograph them. This talk was only possible with the involvement of several people, so the presentation slides have four additional authors – Terry Collett, Ronnie Van Dommelen, Michael Bainbridge and David Joyce. Together, our efforts resulted in a well-received talk and many photographs of specimens that, until now, have not been well-known beyond our local circles. Some stunning pieces have been found on the Bay of Fundy.

Chabazite, Wasson's Bluff, Cumberland Co., Nova Scotia

Chabazite, Wasson’s Bluff, Cumberland Co., Nova Scotia – 7 cm
Terry Collett collection, Ronnie van Dommelen photo.

RonnieChabazite

Chabazite on Heulandite, Wasson’s Bluff, Cumberland Co., Nova Scotia – 14 cm
Ronnie Van Dommelen collection and photo.

DaveTwinChabazite, Wasson's Bluff, Cumberland Co., Nova Scotia

Chabazite, contact twin, Wasson’s Bluff, Cumberland Co., Nova Scotia – 1.2 cm crystal
(Penetration twins are common at Wasson’s Bluff, but contact twins are not.)
David Joyce collection and photo.

Copper, Cape D'Or, Nova Scotia, Beckett Collection, Michael Bainbridge photo

Copper, Cape D’Or, Cumberland Co., Nova Scotia – 15 cm
Largest spinel-law-twinned crystal 5 cm
Robert Beckett collection, Michael Bainbridge photo.

Copper, Cape D'Or, Cumberland Co., Nova Scotia
Copper, Cape D’Or, Cumberland Co., Nova Scotia – crystal 15.7 cm
Rod and Helen Tyson collection, Michael Bainbridge photo.

Thomsonite, Cape D'Or, Cumberland Co., Nova Scotia, George Thompson specimen, M. Bainbridge Photo

Thomsonite, Cape D’Or, Cumberland Co., Nova Scotia – 10.5 cm
Originally in the Doug Wilson collection, now George Thompson collection,
Michael Bainbridge photo.

18cm wide

Natrolite, Diamond Island, Five Islands, Cumberland Co., Nova Scotia – 18 cm
Ronnie Van Dommelen collection, Michael Bainbridge photo.

6.7cm high

Stilbite, Five Islands, Cumberland Co., Nova Scotia – 5.7 cm
Rod and Helen Tyson collection, Michael Bainbridge photo.

Michael Bainbridge is taking superb photos for collectors and publications these days – a link to his website is below, under Links and References.

Overview of Silicate Structures

At the last minute, Dr. Frank Hawthorne was unable to attend and present at the RMS. Thanks to an above-and-beyond effort by Dr. Robert Lauf, this talk was in fact still presented at the RMS – Bob was up into the wee hours of the night working with the original slides to that he could then give both this talk and his own talk on Friday morning.

Bob gave a tough subject and it was a great morning for learning. After a late night of fun with friends, it’s not easy to greet the next morning in a dark presentation room hearing the opening statement “silicates are a complex business…”

However, this talk gave context and focus for what is in fact an important issue in mineral work.

Silicate structures have been generally understood since the 1930s, when William Bragg developed the silicate groups that are still in use today. Those groups are defined on the basis of the nature of the structural organization within the minerals. Silicates are all defined by having a silicon-oxygen tetrahedron- SiO4 – at the heart of their structure, and the key differentiating factor among silicates derives from the way in which each such Si04 tetrahedron is linked to others. This linkage is determined by the way in which the SiO4 tetrahedron shares the other elements within the mineral. This can result in chains, rings and other arrangements, and as a result, the silicates are grouped on this basis – inosilicates, cyclosilicates, orthosilicates, tetrasilicates.

Silicate structures are vitally important, and this talk highlighted why. When we are conducting analyses to identify and define minerals, we can know certain things from chemical analysis, but ultimately we may need to combine chemical and structural analysis to arrive at a proper definition and identification. In fact, structural analysis can be determinative. For example, the mineral wiluite is identified conclusively by understanding the structure – the structure will reveal which site in the mineral’s composition is occupied by boron, and that is determinative in the correct identification.

The silicates require much more structural work. Although definitive work has been completed with other mineral groups, the same cannot be said for the silicates – it is an overwhelmingly large subject, with lots yet to be done.

Orthosilicates

Fresh off giving the first talk, Bob Lauf was up at the podium to give the talk he had planned to give – an overview of the orthosilicate minerals. The orthosilicates include many awesome minerals, such as the titanite group, the zircon group, the garnet group, the humite group, vesuvianite and topaz, and this talk included many photos.

Clinohumite

Clinohumite, Jikhan, Koksha Valley, Badakhshan, Afghanistan 2.5 cm crystal
R. Lauf specimen and photo.

The orthosilicates are defined not by chains or rings, but by isolated groups of SiO4 tetrahedra. Bob likened the results of packing these SiO4 groups, together with the metals, to packing groups of organized ball bearings, with configurations that vary mineral to mineral. In general, the orthosilicates have dense, tightly-packed structures, and this can often mean a high surface hardness and toughness – many of these minerals survive weathering exceptionally well. Meanwhile, properties like cleavage, striations and crystal forms are determined by the metals within the structure, not the SiO4 tetrahedra.

Bob has a new book out, Collectors’ Guide to Orthosilicates. A link is below under Links and References.

Grossular CaliforniaGrossular, Calixico, California – 8 cm
R. Lauf specimen and photo.

Technical Session

Every Friday afternoon at the RMS, we have what we colloquially call the “Technical Session”, Contributed Papers in Specimen Mineralogy, moderated by Dr. Carl A. Francis. This session is packed with great 15-minute talks on a range of topics, some completely specimen-oriented, some more mineralogical. I don’t write at length in these blog posts about the Technical Session talks, because the abstracts from these talks are published during the year in Rocks and Minerals magazine (don’t forget to watch for them!) and they are published in the RMS Program Notes.

However I really want to highlight the Technical Session for a moment this year. One reason is because the Technical Session is one of the features that makes Rochester unique, with professionals and amateurs all contributing. For collectors, there is a lot of interest in these talks – sometimes about rare or new minerals or finds, sometimes about localities, sometimes about scientific work done to establish fakes in Mineral World. And perhaps even more this year than in recent memory, we had a high percentage of truly excellent talks given by students. The group from the Department of Geology and Environmental Earth Science, Miami University, Oxford, Ohio did a particularly outstanding job. Too often, we look around Mineral World and see fewer young people than we’d all like – these students represent a bright future for mineralogy and the science that underpins everything we enjoy in Mineral World.

Friday Night

The Monteponi Mine, Sardinia, Italy

Our Friday night presentation was The Monteponi Mine, Sardinia, Italy, given by Dr. Renato Pagano, one of the world’s pre-eminent mineral collectors. The Renato and Adriana Pagano Collection includes 13,500 specimens, and 4,300 species, making it one of the most remarkable collections ever assembled.

Renato gave a great talk on this classic locality, with great photos. One of my favourite facts from the talk was the origin of the name Monteponi (since we’ve all seen it on musuem labels and in the literature for decades…). The name has evolved from its original name, Monte Paone. Paone was an old Italian word meaning peacock, so it is Mount Peacock. Monteponi is a slightly (!) older locality than our New World ones – the Carthaginians mined silver-bearing galena there from the 6th century BC, and Monteponi later provided silver and lead to the Roman Empire, particularly for coinage and pipes, respectively. Renato took us through the history and stories from the past, including the tragic incident in which one of the great phosgenites was presented as a gift to a clumsy Swedish ambassador who dropped and destroyed it.

Among collectors, Monteponi is most famous for having produced the world’s finest phosgenite crystals.

I had to include this one in this post – I have loved this crystal for about 40 years, as its photograph was featured in one of the first mineral books I ever owned, as a child (Encyclopedia of Minerals and Gemstones).

Phosgenite, Monteponi, Sardinia, Roberto Appiani photo Phosgenite, Monteponi, Sardinia, Italy – 2.5 cm crystal
Milan Natural History Museum specimen, Roberto Appiani photo.

And here are two great phosgenite specimens from the Pagano collection:

Phosgenite Monteponi Pagano Collection Roberto Appiani photo

Phosgenite in a vug in galena, Monteponi, Sardinia, Italy – 6 cm
Renato and Adriana Pagano collection, Roberto Appiani photo.

Phosgenite Monteponi Pagano Collection Roberto Appiani photo

Phosgenite crystals, Monteponi, Sardinia, Italy – 2 cm
Renato and Adriana Pagano collection, Roberto Appiani photo.

Monteponi is also known as a locality for exceptionally fine anglesite crystals.

Anglesite Monteponi Pagano Collection Roberto Appiani photo

Anglesite, Monteponi, Sardinia, Italy – 8 cm
Renato and Adriana Pagano collection, Roberto Appiani photo.

A comprehensive article on Monteponi by Renato, together with Wendell Wilson, is included in The Mineralogical Record, November-December 2014, Vol. 45, No. 6 . If you haven’t yet read it, it’s superb, and if you read it when it came out, maybe time for another read…

Saturday – Annual What’s New

At the heart of the Rochester Symposium for decades, the annual Saturday morning presentations have captured highlights of what has been new in Mineral World over the prior year or so, focusing on fine mineral specimens for collectors.

What’s New in Minerals and Localities – Part I – Jeff Scovil

Jeff Scovil leads our worldwide survey of exceptional new mineral specimens, with an hour of stunning photos. It doesn’t matter who was up for how long having fun the night before, the room is always packed. Jeff’s presentation is always a Symposium highlight!

So here are a few photos to give you a sense – imagine an hour of this… It’s Mineral Heaven!

Euclase

Euclase, La Marina Mine, Muzo District, Boyaca, Colombia
Crystals to 5 cm
Irv Brown collection, J. Scovil photo.

Djurleite2

Djurleite, Aït Ahmane MineBou Azzer, Ouarzazate, Morocco – 4 cm
Steve Smale collection, J. Scovil photo

Djurleite1
Djurleite, Aït Ahmane Mine, Bou Azzer, Ouarzazate, Morocco – 6 cm
Fine Gems and Minerals specimen, J. Scovil photo

Wulfenite China Jeff Scovil

Wulfenite, Jianshan Mine, Xinjiang, China – 4.3 cm
Sam Yung specimen, J. Scovil photo.

Apophyllite Bowtie Jeff Scovil

Fluorapophyllite, Aurangabad, Maharastra, India – 3.2 cm
Spirifer specimen, J. Scovil photo.

Elbaite Morocco

Elbaite tourmaline with albite, Ouarzazate, Morocco – 3.3 cm
Spirifer specimen, J. Scovil photo.

Fluorite Jeff Scovil photo

Fluorite, Huanggang Mines, Inner Mongolia, China – 8.9 cm
Steve Smale collection, J. Scovil photo.

And this last one may not be quite as recent, but the photo is, and the lighting on these crystals is simply as good as mineral photography can get…

Wulfenite Red Cloud Jeff Scovil

Wulfenite, Red Cloud Mine, Trigo Mountains, La Paz Co., Arizona – 3.9 cm
Unique Minerals specimen, J. Scovil photo.

Jeff is the Yoda of mineral photography. If you would like him to photograph your minerals, or you are looking for mineral photos for a publication, his website is under Links and References.

What’s New in Minerals and Localities – Part II

Part II of What’s New in Minerals is open to contributions from attendees. We had a couple of presentations about new books, including one mineral book, an upcoming book by Van King on Franklin, New Jersey, so we’ll keep our eyes open for that.

I then presented a few more examples of what has been new in Mineral World over the last year or so. If you’ve been following this website over the past year, you’ll be familiar with most of these.

Just a note of explanation about photographs here. Below each photo, I am including a link to the applicable blog post on the website where you can see more photos and specimens than are here. (Every new mineral update on this website is represented by a blog post, so even if you didn’t see a specimen before it sold and was removed, there is a nice record of my favourite photos from each update preserved in the blog.)

I’ll begin with the “Synchysite Mystery”… this goes back to a find from 2015, but the analytical work was completed in 2016…

In late 2015, I had posted on the website a small number of “synchysite” crystals from Novo Horizonte, Bahia Brazil. Although they had been sold to me as synchysite, some question arose as to confirmatory identification of these, in part thanks to some work that was ongoing to describe the new mineral parisite-(La) (described in my Tucson 2017 blog post). Analysis by Don Doell, first at the lab at University of Arizona, began to confirm more about their identity. Don then conducted semi-quantitative EDS at SGS Labs and narrowed things down. These are in fact phosphate mineralization: they are likely a combination of rhabdophane-(La), rhabdophane-(Ce) and possibly including monazite-(Ce). They appear to be pseudomorphs after a REE carbonate, probably in the parisite group, given that parisite-(La) has been found at Novo Horizonte in crystals with a similar aspect and appearance, at a similar time (therefore possibly similar part of the deposit). They could also be after bastnasite-(La), which has been described from the locality, although these are most similar in aspect to the parisite-(La) crystals. For now, I’m labelling them rhabdophane, pseudomorph after parisite, with the proviso that the above is the technically closest identification information to date. Thanks very much to Don for this analysis!

Rhabdophane, ps Parisite, Novo Horizonte, Bahia, BrazilRhabdophane, ps Parisite, Novo Horizonte, Bahia, Brazil – 4.3 cm
(More photos/specimens)

A few other “What’s New” entries:

Aragonite, Mamsa, nr. Sidi Ayed, Boulemane Province, Fes-Meknes Region, Morocco

Aragonite, Mamsa, nr. Sidi Ayed, Boulemane Province, Fes-Meknes Region, Morocco – 6.9 cm
W.W. Pinch collection.
(More photos/specimens)

Rutile, var. Struverite-Ilmenorutile, Santa Rosa Mine, Itambacuri, Doce Valley, Minas Gerais, Brazil

Rutile, var. Struverite-Ilmenorutile, Santa Rosa Mine, Itambacuri, Doce Valley, Minas Gerais, Brazil – 3.1 cm
(More photos/specimens)

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil – 3.2 cm
Jack Smith collection.
(NB: If you are interested in these, I was able to acquire five more in Ste. Marie and they will be on the website soon)
(More photos/specimens)

Red Phantom Quartz, Orange River, Cape Province, South Africa

Quartz with Red Phantoms, Orange River, Northern Cape Province, South Africa – 5.2 cm
(More photos/specimens)

More Saturday Presentations

mindat.org – Sixteen Years On: How mindat is Driving New Scientific Discoveries

Jolyon Ralph followed with a talk about mindat as it is today, status, and uses. (Jolyon has presented to the RMS on mindat before, so this was an update). As perhaps all of you know, mindat.org is a “Wikipedia”-like site for mineral information, contributed by users and monitored by administrators. What fewer of you may know (along with me, I didn’t!) is that mindat now hosts over 5 million pages, including 800,000 photographs and profile information for 280,000 localities. (!) (As an aside, Jolyon calculated that the information on mindat would now print a stack of paper 5 km tall.)

Jolyon explained how mindat is now being used for scientific studies and more analytical use. He highlighted that mindat is now being used to draw links between localities, particularly with a view to predictive occurrence among similar types of deposits and occurrences. He also explained that an important consideration when using mindat relates to the biases of users and contributors. For example, there is far more collector interest in crystals of wulfenite than there is in crystals of nepheline, so the amount and quality of information on mindat for wulfenite is different than it is for nepheline.

Mindat is an incredible resource and it was interesting to hear the new ways in which it is being used.

Upside Down and In the Future – Mining Tasmania’s Adelaide Mine

Saturday afternoon was amazing. John Cornish led off with his great talk about the Adelaide Mine in Tasmania, the world’s preeminent crocoite locality. John is involved with the Adelaide Mine project and shared his experience with enthusiasm! He took us on a tour of the mine region, with great information on local flora, fauna and history. And then he took us underground, to see pockets of crocoite up to 7×4 metres. (!) Just amazing…

Crocoite Pocket at the Adelaide Mine, Tasmania, John CornishCrocoite Pocket at the Adelaide Mine, Tasmania
John Cornish photo.

There was one particular story I had not heard and really enjoyed…

All field collectors must adapt to the conditions and nature of the occurrence they are working. What that means in practice is that often the tools that will be of most help will vary wildly from one mineral locality to the next. And I think it’s safe to say that all of us who have done field work for a long time have found resourceful ways of addressing issues, and collecting more efficiently. Often, the need for resourcefulness is driven by our desire to minimize the risk to specimens in the extracting process. Clearly, care is required when collecting crocoite! And in his focus on minimizing damage, John had a resourceful way of minimizing percussion and therefore lowering the risk of popping crocoite crystals off…

Crocoite Underground at the Adelaide Mine, Tasmania, John CornishTrimming crocoite matrix with a hand saw, underground at the Adelaide Mine, Tasmania
Brilliant!
John Cornish photo.

Some of the specimens recovered from the Adelaide Mine have been huge. Sometimes with large specimens in the field, we might include a prospector’s pick for scale. But in this case, John simply had himself included for scale.

Crocoite from the Adelaide Mine, Tasmania, John Cornish Crocoite from the Adelaide Mine, Tasmania
A very happy, if dirty, John Cornish for scale.

Crocoite from the Adelaide Mine, Tasmania, John Cornish

Crocoite from the Adelaide Mine, Tasmania
John Cornish photo.

John’s enthusiastic account was a highlight of RMS 2017.

If you are interested in seeing a bit more online about the Adelaide Mine, and more crocoite specimens, I am including a link to the Adelaide Mining Company’s website below, under Links and References.

Red Cloud Mine – The World’s Greatest Wulfenite Locality

John’s talk was a hard act to follow, but was Les Presmyk ever up to the task…

Les presented on the Red Cloud Mine, a locality that has inspired many of us as collectors since we began collecting minerals. Who doesn’t dream at night of perfect, glassy, sharp, lustrous. red-orange bevelled-square wulfenite crystals from this legendary mine? (Be honest.)

The Red Cloud is located in the Trigo Mountains, near the western border of southern Arizona. It was named after the prehistoric Red Cloud Trail, which leads to the west, on the California side of the Colorado River nearby.

Les took us through the early history of the mine, with some fascinating insights. One I liked was the explanation that because it is so relatively barren with no trees, lumber had to be brought in for quite a distance and was therefore expensive. Of course they did this to timber the mine tunnels, but it was too expensive for miners’ homes. So, the miners made their homes by digging tunnels into the side of the hill, to protect themselves and their belongings from the elements.

This presentation focused on significant mineral collecting at the Red Cloud over the years, beginning with Ed Over’s famous finds in the 1930s, and detailing the 1990s project by Wayne Thompson, James Horner and Les. During this time, the Red Cloud Mine was developed as an open pit operation, specifically for wulfenite specimens.

The most striking fact for me about this project was that from 1995 through 1999, only one significant pocket was found during the entire project – the 1997 pocket, that measured approximately 6 ft x 4 ft. That was it. For all the money spent on each year’s mining, very little was found. After major overburden removal beginning in 1995, and mining for months in advance of the Tucson show in early 1997, the team had assembled one flat of “decent” specimens from vugs and small pockets (under 10cm). Later in 1997 they hit the significant pocket, and from then until they stopped, very little was found – scare pockets and a few good specimens. Suffice it to say, for the period following the 1997 pocket, the expenses far exceeded the value of specimens recovered. This puts into real perspective just how remarkable it is to have excellent Red Cloud wulfenite specimens from any era – they are rare and have come out of the ground at major cost.

Wulfenite Red Cloud Scovil

Wulfenite, Red Cloud Mine, Trigo Mountains, La Paz Co., Arizona – 10.7 cm
Les and Paula Presmyk specimen, J. Scovil photo.

Wulfeniteonquartz.RedCloudMine.Scovil2011-04-0081

Wulfenite, Red Cloud Mine, Trigo Mountains, La Paz Co., Arizona – 4.3 cm
Les and Paula Presmyk specimen, J. Scovil photo.

This was a super talk!

Just as an aside, Red Cloud has been written about a lot, given its legendary status among mineral localities. Of the many published articles and chapters in books, I particularly like the accounts in “Collecting Arizona, State of Mines, Legacy of Minerals” (recounted by Tony L. Potucek, Les Presmyk, Richard Graeme and others, edited by Terry Wallace with Gloria Staebler, Ray Grant, Suzanne Liebetrau and Tom Wilson, published by Lithographie, 2012), and I personally was originally inspired by the Red Cloud Mine section in Peter Bancroft’s classic “Gem and Crystal Treasures” (published by Western Enterprises-Mineralogical Record, 1984). These are good reads – I highly recommend them.

Sunday Finale

By Sunday morning, it was time to recover from all the orange and red crystals from Saturday afternoon.

In past years, we have sometimes had lower attendance on Sunday mornings, but again this year Sunday morning was most-hands-on-deck. (Granted a few stragglers had had too much fun Saturday night.)

Meet an Important Unknown Mineralogist

Belgian collector Herwig Pelckmans led off with a talk that was fascinating, and not only for its subject matter. In his research and work on certain minerals, Herwig had come across the name Vaes, in connection with several uncommon species, and he was curious to know who “Vaes” was. However, when he looked him up, there was almost no information readily available. And so Herwig began an extensive research investigation that led him eventually back to the family and descedants, as he learned about the mineralogist Johannes Vaes (1902-1978). Vaes was a Dutch mining engineeer who became a mineralogist in the Democratic Republic of the Congo. He worked with the company Union Miniere du Haut Katanga, and he identified and defined several new minerals.

Johannes Vaes, CongoJ. F. Vaes in Jadotville (now called Likasi), when he was most likely in his early thirties.
Unknown photographer. Copyright H. Pelckmans

Vaes was at the famous Shinkolobwe Mine, and it was here that he made his discoveries.

Shinkolobwe
Old Belgian postcard showing the open pit of the Shinkolobwe uranium mine, printed by Nels.
Notice the original French spelling of the locality. Photo and copyright H. Pelckmans.

One striking fact about Vaes’ discoveries is that the only scientific instrument he had at his disposal was a polarizing microscope.

Saleeite, Shinkolobwe, Paul DeBondt

Saleeite, Shinkolobwe Mine, Shinkolobwe, Katanga Copper Crescent,
Katanga, Democratic Republic of the Congo
Field of view 3.6 cm
Paul De Bondt specimen and photo.

The mineral vaesite (NiS2) is named in his honour.

Vaesite, nepouite, uraninite, Shinkolobwe

Vaesite with Nepouite coating, associated with black uraninite crystals
Shinkolobwe Mine, Shinkolobwe, Katanga Copper Crescent,
Katanga, Democratic Republic of the Congo
Field of view 3.5 cm, vaesite crystal 1.1 cm.
Paul De Bondt specimen and photo.

At the end of this talk, we had an example of one of the great things about the RMS – the amazing pool of mineral knowledge and mineral history knowledge that is collected together in that ballroom. Van King was able to add an extra footnote to the talk, giving further context for the mineral collecting community: he was able to share that Vaes had in fact been the boss of famous mineral dealer Gilbert Gauthier (who was ultimately responsible for handling many of the fine DRC specimens that now grace collections around the world).

The Pioneer District, Pinal County, Arizona – The Silver King and Magma Mines

Les Presmyk gave the final talk at RMS 2017, about the Silver King Mine and the Magma Mine in the Pioneer District. This was another excellent presentation, with detailed historical accounts and wonderful historical photos. This one really struck me – today, it is hard to imagine horse/mule-drawn ore trains.

Silver King, Ore Wagon, 1880s.AHS

Mule-drawn ore wagons at the Silver King Mine, 1880s. AHS Photo.

This part of the talk is very well represented by Les’s recent excellent article in The Mineralogical Record, “The Arizona Silver Belt: Silver King to McMilllenville”, The Mineralogical Record July-August 2015, Vol. 46:4.

Les then spoke about the famous Magma Mine, where he had worked as a mining engineer. This mine is probably best known among collectors for the glassy barites it produced, but it also produced some wonderful calcite specimens.

Calcite.MagmaMine.3700L.Scovil2011-07-0105

Calcite, 3700 Level, 4D Stope, Magma Mine, Superior, Pinal Co., Arizona -11.1 cm
Les and Paula Presmyk specimen, J. Scovil photo.

Barite.3600.4D.Magmamine.Superior.Scovil2011-07-0096

Barite, 3600 Level, 4D Stope, Magma Mine, Superior, Pinal Co., Arizona – 7.1 cm
Les and Paula Presmyk specimen, J. Scovil photo.

The Rest of the Fun

As I write every year in my RMS posts, a lot of the best of Rochester occurs beyond the talks – in the halls, over meals, and on the 4th floor (the dealer floor, open when talks are not on). Socializing continues well into the morning hours each night, and includes a few traditions – among others, the not-to-be-missed Saturday night mineral songs with David Joyce. (I assume most have heard Dave’s mineral collecting and mining tunes, but if not, I’m including a link below).
The collegiality at the RMS is unique among mineral events!

Displays

The Exhibit Room had great displays this year, as every year. Some are contributed by museums and many are contributed by collectors attending the RMS.

Terry Huizing Calcite Display, Rochester 2017

Calcite, Terry Huizing collection.
Amazing variety in this case.

As a reader, I often find it hard to take in many full-case displays in photos, so here are just a few of the specimens that really struck me.

This brilliant bournonite in John Betts’ case has truly gorgeous twinning.

Bournonite, Yaoganzian Mine, John Betts collection

Bournonite, Yaoganxian Mine, Hunan, China – 3.6 cm
John Betts collection.

A huge spinel from the classic New York locality featured in the display from the New York State Museum.

Spinel, Monroe, Orange Co., New York, New York State Museum, Steve Chamberlain Collection

Spinel, Monroe, Orange Co., New York – approx 15 cm
Steve Chamberlain collection at the New York State Museum.

Super quartz from Palermo No.1 – for all the world looks like a fine contemporary Brazilian quartz, with bright, glassy lustre not conveyed in the photo.

PalermoQuartz

Quartz, Palermo No. 1 Mine, North Groton, New Hampshire – approx 7 cm
Mined by Bob Whitmore. Maine Mineral and Gem Museum

A great nest of silver wires from Beaverdell, in George Thompson’s case.

Silver, Highland Bell Mine, Beaverdell, British Columbia, George Thompson collection

Silver, Highland Bell Mine, Beaverdell, British Columbia – approx 5 cm
George Thompson collection.

Two super specimens from John Medici’s case.

Celestine from Holloway Quarry, Fluorite from Auglaize Quarry
Celestine, Holloway Quarry, Newport, Michigan – approx 7 cm
Fluorite with Calcite, Auglaize Quarry, Junction, Ohio – approx 5 cm
John Medici collection.

This hematite took my breath away. It is spectacular! It was part of an excellent display case of hematite and goethite from the Diane Francis collection.

Hematite, Congonhas, Minas Gerais, Brazil, Diane Francis collection
Hematite, Casa de Pedra Mine, Congonhas, Minas Gerais, Brazil – approx 7 cm
Diane Francis collection.

David Joyce had a great case of Grenville minerals. I thought rather than include something you might be expecting, like one of Dave’s great titanites, fluorapatites or zircons, I’d opt for something we don’t usually see from the Grenville. This is a striking, bright yellow sphalerite crystal.

Sphalerite, Balmat, St. Lawrence Co., New York, David Joyce collection, formerly Bill Pinch collection

Sphalerite, Balmat, St.Lawrence Co., New York – approx 5 cm
David K. Joyce collection

This beautiful sphalerite was formerly in Bill Pinch’s collection, and he gave it to Dave as a gift, so it seemed particularly fitting to include as my last photo entry from the cases this year.

Bill Pinch

As mentioned above, the following is the full In Memoriam written by Steve Chamberlain and included at the beginning of the RMS Program Notes this year.

In Memoriam – Rochester Mineralogical Symposium

Bill Pinch passed away on April 1, 2017 from complications of earlier surgery. A reception will be held this year in Rochester, New York, to celebrate his life. Next February, there will be a memorial service in Tucson, Arizona. We will celebrate his many achievements next April at the 45th Rochester Mineralogical Symposium.

Bill was an elemental force in specimen mineralogy. One of his most significant achievements was the initiation of the Rochester Mineralogical Symposium. The First Annual Mineral Workshop was held 20-21 April 1974 at the Sheraton Inn in Canandaigua. Under the auspices of Mineral Section President, Kay Jensen, Bill and Dave Jensen served as co-chairmen this first year. The second workshop, now the Rochester Mineralogical Symposium, was held 17-20 April 1975 in the downtown Holiday Inn and was again co-chaired by Bill and Dave Jensen.

For the next ten years, Pinch served as convening co-chairman and helped build the Symposium into an internationally-recognized annual event, setting the highest standards for speakers, exhibits and congeniality. He initiated the annual What’s New in Minerals – still a popular Saturday morning part of the event. He also began the annual production of Program Notes. With the 13th RMS, formal leadership of the Symposium passed to others, but Bill continued to serve as an advisor. With his support, the Technical Session was added to the Friday afternoon program and important mineralogical works were reprinted, including Goldschmidt’s Atlas der Krystalformen and Beck’s Mineralogy of New York State, to name just a few.

At the 25th Symposium, Bill gave a keynote address, “50 Years of Mineral Collecting; 25 Years of the Symposium”. The preceding year, the Symposium had donated the annual proceeds of its annual auction to the successful funding effort for the Canadian Museum of Nature to purchase the W.W.Pinch mineral collection, establishing another legacy.

Slowly, over the next decades, Bill drifted away from direct participation in the Symposium We were delighted by his attendance at the 43rd RMS on the occasion of Michael Bainbridge’s talk, “The William W. Pinch Collection at the Canadian Museum of Nature”. The coming book of the same title will be a fitting memorial to Bill’s success in assembling a world-class mineral collection. Here we acknowledge our debt to Bill for his successful efforts in beginning and growing the Rochester Mineralogical Symposium. Godspeed.

2018 RMS

As I mentioned up top, RMS 2018 will be a little different – it will be dedicated to Bill’s memory, and it will include talks on several topics that were close to Bill’s heart – among them, Tsumeb, Rare Minerals and Fine Minerals. Stay tuned for updates, as arrangements are finalized. The dates are April 19-22 ,2018.

Until Next Year…

The Rochester Symposium is a great event, that has seen many of Mineral World’s most prominent names as contributors. At the same time, the Symposium continues to embrace contributions from all levels in mineral collecting – it simply would not be what it is without everyone who contributes.

Of course, the Symposium could literally not happen without the dedicated efforts of the team who put it together – countless thanks to Steve Chamberlain (chair), Helen Chamberlain (registrar), and many others on the committee and those helping at the event and in the background, including Dan Imel, Carl Francis, Bruce Gaber, Brian McGrath, Bob Morgan, Betty Fetter, George and Susan Robinson, Quintin Wight, Elizabeth Von Bacho and Tom White. I hope I haven’t missed anyone!

Ativan No Prescription provides a fast effect but the period of the action is short.

And thank you to all of the speakers and photographers from this year, for all of your help with photos to share through this report.

Links and References

If you are seeking links for anything mentioned above, some of these may be of interest:

On Bill Pinch’s website, there are tabs for the In Memoriam and also Links (this latter includes three links, with a video produced after the Canadian Museum of Nature acquired his original collection).

Our amazing professional mineral photographers (who – of course – take photos of private collection specimens for individual collectors): Jeff Scovil and Michael Bainbridge

The new book by Robert J. Lauf: Collectors’ Guide to Orthosilicates

The Adelaide Mining Company has lots more crocoite photos (mining and specimens available) on its website. The underground photos are in the History section – they really give a sense of how tight most of these pockets have been, and provides good context for how remarkably well the specimens have been collected and preserved.

David K. Joyce has written – and plays and sings, of course – the soundtrack for so many great times in minerals. The tunes are available on itunes and the CD is available from Dave – if you’d like to hear them, here is the page where you can listen.

When they are available, the 44th RMS Program Notes will be posted online here.

Posted by: Raymond McDougall on 02.26.2017 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve posted some great new pieces in this Brazil Update (click here).  These include gorgeous stars of rutile on hematite from Novo Horizonte, older specimens of cyclically-twinned rutile from Diamantina, and beautiful muscovite crystals from Mantena, Minas Gerais.

Rutile on Hematite, Novo Horizonte, Bahia, Brazil

Rutile on hematite, Novo Horizonte, Bahia, Brazil – 4.8 cm

Rutile on hematite, Novo Horizonte, Bahia, Brazil

 Rutile on hematite, Novo Horizonte, Bahia, Brazil – 3.5 cm

Rutile on hematite, Novo Horizonte, Bahia, Brazil

Rutile on hematite, Novo Horizonte, Bahia, Brazil – 3.4 cm

Rutile, Diamantina, Minas Gerasis, Brazil

Rutile, Diamantina, Minas Gerais, Brazil – 2.6 cm

Rutile, Diamantina, Minas Gerais, Brazil

Rutile, Diamantina, Minas Gerais, Brazil – 2.8 cm

Muscovite, Mantena, Minas Gerais, Brazil

Muscovite, Mantena, Minas Gerais, Brazil – 7.3 cm

Muscovite, Mantena, Minas Gerais, Brazil

Muscovite, Mantena, Minas Gerais, Brazil – 8.6 cm

Muscovite, Mantena, Minas Gerais, Brazil

Muscovite, Mantena, Minas Gerais, Brazil – 7.6 cm

Muscovite, Mantena, Minas Gerais, Brazil

Muscovite, Mantena, Minas Gerais, Brazil – 7.5 cm

Muscovite, Mantena, Minas Gerais, Brazil

Muscovite, Mantena, Minas Gerais, Brazil – 7.0 cm

Muscovite, Mantena, Minas Gerais, Brazil

Muscovite, Mantena, Minas Gerais, Brazil – 5.2 cm

Posted by: Raymond McDougall on 02.25.2017 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve posted the first of the new Tucson specimens in this Wodginite Update (click here). These are sharp, lustrous wodginite crystals from a small recent find at the Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil. Wodginite is not a common mineral, and it is quite difficult to acquire good crystals. The identification of these ones has been confirmed at the University of Arizona, and, along with subsequent EDS work, it has been established that of the various members of the wodginite group, they are wodginite.

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

 Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 2.5 cm

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 2.7 cm

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 3.2 cm

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 2.6 cm

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 3.2 cm

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Itatiaia Mine, Conselheiro Pena, Minas Gerais, Brazil – 2.0 cm

Posted by: Raymond McDougall on 02.22.2017 | Filed under: Latest, Mineral Shows | Comments (0)

 

Always hard to contain my enthusiasm about Tucson… The world’s largest annual gathering of mineral people and mineral specimens from around the globe never disappoints – it is a great time full of great minerals.

Santa Rita The foothills of the Santa Rita Mountains, just south of Tucson.

OK, I admit it’s also a sunny and warm break from Canadian winter. While many others in North America seem to be having a bit lighter winter than usual, we’ve had lots of snow this year in the Bancroft area. It began in November and now the snow is high. A February 2017 snowbank by our house:

SnowbankBancroft, winter 2016-17. Snowbanks about 8-9ft tall.
(For scale, Emery is a 90 lb Lab. He never misses a chance to be out in the snow.)

Tucson’s surroundings are obviously a real contrast to home, both as to weather and scenery.

SaguaroSanta Rita Mountains and a saguaro.

During the show, there is so much to see and do with the minerals and mineral friends that, in the limited time of a Tucson trip, there is precious little chance for exploring the surroundings. However, every step out in the area is worth it!

YuccaA walk in the foothills

As every year, the mineral events around Tucson are spread over many different show venues, over a few weeks. From one year to the next, dealers come and go, and move about. New shows pop up, older shows wane and sometimes disappear altogether, and then some rise again from the ashes. So, always something new and interesting to discover out there in the urban field-collecting jungle.

I thought maybe I’d start with my favourite warnings and signs from around the shows.

I didn’t take a photo of the one in my rental car, but it was a winner: every time I turned on the car,  a bright, bold electronic notice told me not to operate the car stereo while the car is operating, because it’s dangerous. (Thanks so much to the Mensa-candidate lawyer who came up with that one.)

At one show:

Washroom sign

Really???
(People do this?)

I quite liked this lawn sign:

No Lawn Signs

And at that same show, within about 40 ft of the one above:

Lawn Signs

Anyway… On to the minerals!

On the whole, there were some excellent finds, mostly of the small and isolated variety (rather than large-scale splashes of new discoveries). I’m going to start with Brazil, because over the past year, it has produced many fine specimens.

A small number of new wodginite crystals have been found. These are sharp and great for the species!

 Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil Wodginite, Linopolis district, near Divino das Larajeiras, Minas Gerais, Brazil – 2.5 cm

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Linopolis district, near Divino das Larajeiras, Minas Gerais, Brazil – 2.6 cm

Wodginite, Linopolis District, Divino das Laranjeiras, Minas Gerais, Brazil

Wodginite, Linopolis district, near Divino das Larajeiras, Minas Gerais, Brazil – 3.2 cm

If you’d like to see more of these, I’ve posted them in the Wodginite Update (click here).

The workings at Novo Horizonte have produced more excellent hematite-rutile specimens. Most of these are not in very good condition, but a few are really super.

Rutile on Hematite, Novo Horizonte, Bahia, Brazil

Rutile on Hematite, Novo Horizonte, Bahia, Brazil – 4.8 cm

Novo Horizonte has also been the subject of some additional mineral analysis, with very interesting results over the past year. One of these is a new mineral, published in 2016. The work on this mineral began with our late friend, Luiz Menezes – one of the most observant and careful people in mineral world, who never missed something new, never assumed an identification, and whose work contributed to the description of several new minerals. The work on this material was continued by a group of mineralogists, and in June 2016, the new mineral, parisite-(La), was officially regognized by the IMA. (The full group: Luiz A.D. Menezes Filho, Mario L.S.C. Chaves, Nikita V. Chukanov, Daniel Atencio, Ricardo Scholz, Igor Pekov, Geraldo Magela da Costa, Shaunna M. Morrison, Marcelo Andrade, Erico Freitas, Robert T. Downs and Dmitriy I. Belakovskiy.)

I am including a photograph of one of the best specimens – there are not many in existence. This one was available from Luisa at Luiz Menezes Minerals.

Parisite La
Parisite-(La), Novo Horizonte, Bahia, Brazil – approx. 7 cm

Just before leaving Novo Horizonte, I have a small final update. In November 2015, I had a few specimens from this locality on the website, sold to me under the label “synchysite”, and so-labeled on the website. Subsequent analysis by Don Doell has confirmed more about their identity. Having conducted semi-quantitative EDS at SGS Labs, Don found that these are in fact phosphate mineralization, and they are likely a combination of rhabdophane-(La), rhabdophane-(Ce), possibly including monazite-(Ce). They appear to be pseudomorphs after a REE carbonate, probably in the parisite group, given that this new parisite-(La) has been found at Novo Horizonte in crystals with a similar aspect and appearance, at a similar time. They could also be after bastnasite-(La), which has been described from the locality. For now, I’m labelling them rhabdophane, pseudomorph after parisite, with the proviso that the above is the technically closest identification information to date. Thanks very much to Don for this analysis! Very cool for rhabdophane. (If you’d like to see what these looked like, they are here.) Mine are all sold, but Carlos Menezes had a few thumbnail-sized specimens of this fascinating material available in Tucson.

Also from Brazil, there has been one I think will be underrated and missed by many collectors. From Mantena, Minas Gerais, there has been a find of beautiful muscovite crystals. Yes of course the mica group minerals are very common minerals, and one might be jaded and tempted to overlook them on that basis. However, it can be a challenge to acquire a genuinely good muscovite specimen. These muscovite crystals from Mantena have nice colour, giving depth and presence. I picked out the finest few I could find and they will be online in a coming update.

Muscovite, Mantena, Minas Gerais, Brazil

Muscovite on albite, Mantena, Minas Gerais, Brazil – 7.3 cm

I have always loved the blue fluorapatites from Ipira, but, although I always look for them, I am almost always disappointed. This is not because there aren’t any – it’s because very few of them are sharp and collection-worthy. The deposits mostly contain corroded-looking crystals with poor definition, and most crystals are broken crystal segments. This past year, Daniel Foscarini Almeida conducted significant mining operations in a zone that contained small, sharp crystals. Almost all had small chipping, but I went through hundreds and these best ones are extremely good. The colour with backlighting is hard to believe.

Fluorapatite, Ipirá, Bahia, Brazil

 Fluorapatite, Ipirá, Bahia, Brazil – 3.2 cm

And finally from Brazil (for now), Minas Gerais yielded some very fine phantom quartz crystals this year, from the deposits at Presidente Kubitschek. As always with Brazilian quartz, it can be very hard to find specimens in excellent condition, but some of these are just great.

Quartz with phantoms, Presidente Kubitschek, Minas Gerais, Brazil

Quartz with phantoms, Presidente Kubitschek, Minas Gerais, Brazil
Crystal 2.0 cm wide

Moving on from Brazil to the African continent next, still on the quartz theme, there was a pocket of spectacular quartz with red phantoms from Orange River, Northern Cape Province, South Africa. Red quartz has been produced from this locality for many years, however, long-time South African dealer Clive Queit told me he has never seen any he liked as much as these, because these have such distinct red phantoms enclosed in sharp, clear quartz crystals – in his view they are the best. The crystals themselves are relatively small, and my favourite specimens were the ones that had good proportions (of crystal size to the piece), so the ones I consider the best are not large specimens. They are superb.

Red Phantom Quartz, Orange River, Cape Province, South Africa

Red Phantom Quartz, Orange River, Northern Cape Province, South Africa – 5.0 cm

Red Phantom Quartz, Orange River, Cape Province, South Africa

Red Phantom Quartz, Orange River, Northern Cape Province, South Africa – 4.0 cm

Red Phantom Quartz, Orange River, Cape Province, South Africa

Red Phantom Quartz, Orange River, Northern Cape Province, South Africa – 6.1 cm

Further north in Africa, there’s something a bit different and new from Arrondissement Diako, in Mali. We’ve seen thousands of loose single garnet crystals from here over the years, and occasionally we’ve been lucky enough to see matrix specimens. A new find, at Diabe Sira, has produced some very attractive specimens with sharp, lustrous grossular crystals on matrix. As is the case with all localities, and particularly much of the Mali material (of the various minerals), so much is damaged – the devil is in finding fine, collection-quality specimens. I worked through a lot of this material and I found a few – they are really nice!

Grossular, Diabe Sira, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali

Grossular, Diabe Sira, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali – 9.7 cm

Further north still, I think we’ve all become a bit spoiled by the constant flow of excellent mineral specimens from Morocco in recent years. So it felt like a bit of a disappointment that there wasn’t a spectacular new find, and that some of the material we’ve seen in recent times is drying up. As I mentioned in my Ste. Marie post last summer, the Sidi Lahcen barites are no more – I love those specimens, and good ones are now already hard to find (and in some cases very expensive). Speaking of production that seems to have dried up, I was also surprised that there were hardly even any signs of the Mamsa aragonites (the ones posted here last fall).  I had expected to see some of the lesser material at very least.

However, from Morocco there were some beautiful erythrites from the Bou Azzer district.

Erythrite, Bou Azzer, Tazenakht, Ouarzazate Province, Morocco

Erythrite, Bou Azzer, Tazenakht, Ouarzazate Province, Morocco – 1.3 cm crystal

China seems to have produced less in the way of truly new material. There are some new bluish-purple quartz specimens, highly priced and different dealers were giving different locality names – we’ll see what the future holds for these. From Huanggang, there were a few of the flat, discoidal calcites that made their debut last fall in Denver – here is a sweet small one.

Calcite, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China

Calcite, Huanggang Mines, Hexigten Banner, Ulanhad, Inner Mongolia A.R., China – 3.3 cm

From Russia, the mines at Dal’negorsk continue to operate and there was a new pocket of sharp datolite crystals found at the Bor Pit. These crystals are a beautiful light green and they are highly lustrous.

Datolite, Bor Pit, Dal'negorsk, Primorskiy Kray, Russia

 Datolite, Bor Pit, Dal’negorsk, Primorskiy Kray, Russia – 5.0 cm

As you’ll know if you’ve read my posts from the past, I love Peru and Peruvian mineral specimens. Over the years, the large polymetallic mines have produced a variety of excellent specimens, and several workings undertaken purely for mineral specimen mining have provided spectacular pieces. However, this was really not a great year for new Peruvian specimens. Ucchucchacua has now produced no new specimen material in three years, and a new piece of unfortunate news from Peru is that the Lily Mine has ceased operations. Lily was operated for copper and is known to collectors for a few minerals – chrysocolla, and most notably some of the best atacamite and clinoatacamite specimens that have been found anywhere. I obtained only a few more of these, as good specimens are already scarce, and I’m told any future production is questionable.

 Clinoatacamite, Lily Mine, Pisco Umay, Ica Dept., Peru
Clinoatacamite, Lily Mine, Pisco Umay, Ica Dept., Peru
Superb crystal group, 5 mm

In much better news, a Peruvian collection and the workings at Mundo Nuevo have provided some excellent specimens.

Pyrite and Lautite, Mundo Nuevo Mine, Huamachuco, Sanchez Carrion Province, La Libertad Dept., Peru

Pyrite and Lautite, Mundo Nuevo Mine, Huamachuco, La Libertad Dept., Peru – 2.9 cm

Back to North America, I was lucky to pick up a couple of nice little wulfenite specimens from the Red Cloud Mine, including this one – it’s not big, but this thing is a red window pane.

Wulfenite, Red Cloud Mine, Silver District, Trigo Mts., La Paz Co., Arizona

 Wulfenite, Red Cloud Mine, Trigo Mountains, Arizona – 2.3 cm
(Crystal 1.0 cm across, 0.8 cm on edge)

Over the coming weeks, many of these finds – and more new material – will be posted on the website, so stay tuned!

Palm

 

In the meantime, as nice as it is to have had a break, it’s so great to be home. (You can take the Canadian out of the winter but you can’t take the winter out of the Canadian – at least not this Canadian.) It’s beautiful out here in the winter woods in February, as always!

Bancroft, Ontario, Canada

Yes, the snow piles are high.

Snow Window

Another 9 ft tall snowpile. Granted, it reduces the view for a while.
And we probably shouldn’t expect this part of the garden to emerge until late May.

This year’s snow-management issues aside, it’s gorgeous and peaceful, with lots of active local residents in our woods…

 Blue Jay, Bancroft, Ontario, Canada

Blue Jay, near Bancroft, Ontario

And there’s this one guy who loves winter more than any being I’ve known:

Snow Angel

Every day from the first snows until the last snow patches are too small in spring, Emery does snow angels.

Well, that’s it, until the Rochester 2017 report.

If you haven’t yet seen them, this year’s Rochester Mineralogical Symposium program and registration materials are online here. Hope to see you there!

Meanwhile, of course these specimens will be coming online soon!

Posted by: Raymond McDougall on 09.27.2016 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve posted some excellent new specimens in this Brazil Update (click here). This update is a mix of great pieces from various finds and localities. Among them, there is a superb spessartine from the 2003 pocket at the Navegadora Mine and a gorgeous rutile star with glass-clear pale smoky quartz crystals over it. This update features some exceptionally fine crystals of rutile var struverite-ilmenorutile, and it also includes sharp crystals of chrysoberyl var. alexandrite. Many more fine specimens, including excellent crystals of montebrasite, brazilianite, spodumene var. kunzite, muscovite (including “star”-twinned crystals), rutilated quartz and sceptered quartz.

Spessartine Garnet, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil

 Spessartine Garnet, Navegadora Mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil – 6 cm

Quartz, Rutile, Hematite, Novo Horizonte, Bahia, Brazil

Quartz on a Rutile-Hematite star, Novo Horizonte, Bahia, Brazil
Field of view 6 cm

 Rutile, var. Struverite-Ilmenorutile, Golconda District, Governador Valadares, Minas Gerais, BrazilRutile, var. Struverite-Ilmenorutile, Golconda District, Governador Valadares, Minas Gerais, Brazil – 4.1 cm

Rutile, var. Struverite-Ilmenorutile, Santa Rosa Mine, Itambacuri, Doce Valley, Minas Gerais, Brazil

Rutile, var. Struverite-Ilmenorutile, Santa Rosa Mine, Itambacuri, Doce Valley, Minas Gerais, Brazil – 3.1 cm

Rutile, var. Struverite-Ilmenorutile, Santa Rosa Mine, Itambacuri, Doce Valley, Minas Gerais, Brazil

Rutile, var. Struverite-Ilmenorutile, Santa Rosa Mine, Itambacuri, Doce Valley, Minas Gerais, Brazil – 2.5 cm

Rutile, Diamantina, Jequitinhonha Valley, Minas Gerais, Brazil

Rutile, Diamantina, Jequitinhonha Valley, Minas Gerais, Brazil – 3.8 cm

Montebrasite, Telirio Claim, Linoplois, Divino das Laranjeiras, Minas Gerais, Brazil

Montebrasite, Telirio Claim, Linoplois, Divino das Laranjeiras, Minas Gerais, Brazil
Field of view 3.3 cm

Brazilianite, Telirio Claim, Linoplois, Divino das Laranjeiras, Brazil

Brazilianite, Telirio Claim, Linoplois, Divino das Laranjeiras, Brazil – 4.2 cm

Chrysoberyl var. Alexandrite, Carnaíba District, Pindobaçu, Bahia, Brazil

Chrysoberyl var. Alexandrite, Carnaíba District, Pindobaçu, Bahia, Brazil – 1.5 cm twin

Chrysoberyl var. Alexandrite, Carnaíba District, Pindobaçu, Bahia, Brazil

Chrysoberyl var. Alexandrite, Carnaíba District, Pindobaçu, Bahia, Brazil – 4.7 cm

Chrysoberyl (Twinned) on Muscovite, Rio das Pratinhas, Arataca, Bahia, Brazil

Chrysoberyl (Twinned) on Muscovite, Rio das Pratinhas, Arataca, Bahia, Brazil – 3.1 cm

Spodumene var. Kunzite, Urucum Mine, Galilea, Minas Gerais, Brazil

Spodumene var. Kunzite, Urucum Mine, Galilea, Minas Gerais, Brazil – 6.9 cm

Muscovite ("Star Mica"), Jenipapo Mine, Itinga, Minas Gerais, Brazil

Muscovite (“Star Mica”), Jenipapo Mine, Itinga, Minas Gerais, Brazil – 6.6 cm

Rutilated Quartz, Novo Horizonte, Bahia, Brazil

Rutilated Quartz, Novo Horizonte, Bahia, Brazil – 9.4 cm

Quartz, Barra do Salinas, Coronel Murta, Minas Gerais, Brazil

Quartz, Barra do Salinas, Coronel Murta, Minas Gerais, Brazil – 7.0 cm

Quartz, Barra do Salinas, Coronel Murta, Minas Gerais, Brazil

Quartz, Barra do Salinas, Coronel Murta, Minas Gerais, Brazil – 7.1 cm