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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!

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 02.14.2017 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve added some excellent specimens in this Russia Update (click here). In particular, there are some super, transparent, colourless fluorites from Dal’negorsk, with crystals exhibiting up to five crystal forms. Among these area couple of great overgrowth and phantom pieces. These fluorite specimens are not new, I’ve kept an eye out for them in recent years and have acquired good ones when I’ve been able. This update also includes some great calcite specimens, with some fascinating crystal forms, and some fine datolite specimens with sharp crystals.

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – 9.5 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – crystal 1.3 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – 9.3 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – 9.6 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – crystal 3.5 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite phantom, modified cube inside modified dodecahedral crystal
Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – Field of view 2.0 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – Field of view 5.0 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – Field of view 3.5 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite exhibiting five crystal forms,
Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia
Crystal 1.3 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – 5.5 cm

Fluorite, Dalnegorsk, Primorskiy Kray, Russia

Fluorite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – 3.7 cm

Calcite, Verchniy Mine. Dalnegorsk, Primorskiy Kray, Russia

Calcite, Verchniy Mine, Dal’negorsk, Primorskiy Kray, Russia – 9.0 cm

Calcite, Verchniy Mine, Dalnegorsk, Primorskiy Kray, Russia

Calcite, Verchniy Mine, Dal’negorsk, Primorskiy Kray, Russia

Calcite, Nikolaevskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Calcite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia – 5.5 cm

Calcite, Nikolaevskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Calcite, Nikolaevskiy Mine, Dal’negorsk, Primorskiy Kray, Russia

Datolite, Bor Pit, Dalnegorsk, Primorskiy Kray, Russia

Datolite, Bor Pit, Dal’negorsk, Primorskiy Kray, Russia – 2.1 cm crystal

Datolite, Bor Pit, Dalnegorsk, Primorskiy Kray, Russia

Datolite, Bor Pit, Dal’negorsk, Primorskiy Kray, Russia – 7.5 cm

Posted by: Raymond McDougall on 01.14.2017 | Filed under: Latest, Recent Mineral Updates | Comments (0)

I’ve posted some beautiful new specimens in this Morocco Update (click here).  The pieces include azurite from Kerrochen and Bou Beker, vanadinite from Taouz, pyrite-coated fluorite from El Hammam, purple fluorite from Tounfit, twinned cerussite from Mibladen and quartz on siderite from Gourrama.

Azurite, Kerrouchen, Khenifra Province, Morocco
Azurite, Kerrouchen, Khenifra Province, Morocco
Crystal 2.5 cm

Azurite, Kerrouchen, Khenifra Province, Morocco

Azurite, Kerrouchen, Khenifra Province, Morocco
Crystal 3.1 cm

Azurite, Bou Beker, Touissit-Bou Beker District, Jerada Province, Morocco

Azurite, Bou Beker, Touissit – Bou Beker District, Jerada Province, Morocco – 9.7 cm

Azurite with Malachite, Bou Beker, Touissit - Bou Beker District, Jerada Province, Morocco

Azurite with Malachite, Bou Beker, Touissit – Bou Beker District, Jerada Province, Morocco – 6.3 cm

Vanadinite, Taouz, Er Rachidia Province, Morocco

Vanadinite, Taouz, Er Rachidia Province, Morocco – 5.2 cm

Fluorite coated with Pyrite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco

Fluorite coated with Pyrite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 6.0 cm

Fluorite coated with Pyrite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco

Fluorite coated with Pyrite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 4.2 cm

Cerussite with Barite, Les Dalles Mine, Mibladen Mining District, Midelt, Khenifra Province, Morocco

Cerussite with Barite, Les Dalles Mine, Mibladen Mining District, Midelt, Khenifra Province, Morocco
Field of view 2.0 cm

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco
Field of view 4.0 cm

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco
Field of view 3.5 cm

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco
Field of view 2.0 cm

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco

Fluorite, Tounfit, Boumia, Khenifra Province, Morocco
Field of view 3.0 cm

Quartz, Siderite, Gourrama, Er Rachidia, Morocco

Quartz, Siderite, Gourrama, Er Rachidia, Morocco
Crystal 3.2 cm

Posted by: Raymond McDougall on 09.02.2016 | Filed under: Latest, Mineral Shows | Comments (0)

 

In a valley in the Vosges region of France, the quiet town of Sainte-Marie-aux-Mines transforms into a bustling mineral and gem extravaganza every June. This is the most beautiful setting for any of the world’s major annual mineral shows, and attending is a great experience.

Sainte-Marie-aux-Mines 2016 mineral show

Sainte-Marie-aux-Mines, 2016

Although there was much stormy and unsettled weather across France and Germany this year, the towns of this area escaped the more significant flooding damage that affected so many communities elsewhere. The Rhine was certainly swollen with much more water than usual – and thunderstorms left debris on the roads – but for the most part, the rains just meant lots of green across the countryside.

Orschwiller, France

Vineyards, near Orschwiller. Chateau Haut Koenigsbourg is perched above, in the Vosges mountains.

I love the region’s idyllic small towns – quiet, with the calls of blackbirds overhead.

Saint Hippolyte, France

Saint Hippolyte, Haut-Rhin, France

Saint Hippolyte, France

Beautiful Alsace architecture bathed in a warm evening light

In the town of Ste. Marie itself, one of my favourite things about its setting is that the valley is quite steep, and so the forests and pastures form a backdrop for many of the views from down in the middle of the town.

Saint-Marie-aux-Mines, France

Saint-Marie-aux-Mines, Val D’Argent, France

The river and waterways of the town are channeled behind the houses and other buildings – and normally at this time of year there isn’t much water. This year, there was lots!

Ste. Marie-aux-Mines, France

Bubbling water channel running through Sainte-Marie-aux-Mines

One thing that really stood out this year was the temperature – it was HOT! Humid too. Lots of sun and haze… and you also had to watch for the late-afternoon thunderstorms.

Storm3

Signs of impending rain at Sainte-Marie-aux-Mines 2016

So I did see this one coming…

Storm1

Thunderstorm coming from up the Val D’Argent

…and I thought I had time to make it back to the car, but… ended up sheltering part way there, when the skies opened up!

Storm2

Rainwater streaming from waterspouts directly into the water channel that runs behind the houses – efficient!

The storms were short and did not make life uncomfortable for long – they were actually refreshing. In fact, there was something that made things far more uncomfortable at the show…

Halogen

300W halogen lights on stands. It is hard to find a hotter mainstream light source (!) – these were all over the indoor dealer displays.
I love the colour quality of halogen lights, but these things are stoves on sticks.

Sainte-Marie-aux_Mines, France

One of the tent-lined streets at Sainte-Marie-aux-Mines

For me the most exciting new find at Ste. Marie was actually not on public display. Tomasz Praszkier brought out the top new Moroccan aragonite specimens and they are truly superb! Aragonite is not a rare mineral, of course, and some aragonite localities are rather abundant producers, so, for example, we typically see lots of aragonite available from Tazouta, Morocco, and also from Minglanilla, Spain. (Even in those instances, truly fine specimens are not the rule, as the vast majority are damaged). These specimens exhibit twinning, with pseudo-hexagonal cyclic twins of aragonite. However, these new specimens from Mamsa are classic, elongated, tapered orthorhombic crystals in groups of radiating spikes and make for dramatic specimens.  Even though aragonite itself is uncommon, it is very hard to acquire high-quality specimens of this most classic habit.

In this case, Tomasz went through hundreds of flats (yes flats (!)) of material in Morocco, and the specimens I acquired from him are all in the top 20 to date (top 20 pieces, not flats!). Almost everything he saw was badly damaged. This bulk of lower quality material will undoubtedly begin to show up at future mineral shows, but – interesting – it was almost entirely absent among the Moroccan dealers in Ste. Marie.

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

Aragonite, Mamsa, nr. Sidi Ayed, Boulemane Province, Fes-Meknes Region, Morocco – 7.5 cm

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

Aragonite, Mamsa, nr. Sidi Ayed, Boulemane Province, Fes-Meknes Region, Morocco
Field of view 6 cm

It is notable that the aragonite at this locality does also occur in other habits, including as elongated pseudo-hexagonal twins, so we may see those in future. The locality itself is well-exposed in a barren area north of Sidi Ayed. The difficulty is that the material closer to the surface has been extracted, and this was the matrix that was easier to collect – as they’ve gone deeper, the matrix has been tougher, and the material from these deeper excavations has been damaged. Most collecting there has been by local collectors who are more often digging agates, and of course collecting these delicate aragonite sprays required different techniques and care – hence the high level of damage with most of this material.

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

As usual, there were many Moroccan dealers with the usual – most had very typical material, in moderate condition. One interesting new find was some purple fluorite, from very narrow seams at a locality Elyachi, near Tatouine.

TatouineFluorite

 

Fluorite, Elyachi, nr. Tatouine, Meknes-Tafilalet, Morocco – 8.2 cm

One last note from Morocco is that the production of the beautiful blue barites from Sidi Lahcen (these ones) is reportedly finished. Although we always have to be skeptical when we are told that a locality is exhausted, the marketplace confirmed it in Ste. Marie this year, with almost no truly high-quality specimens available.

Speaking of high-quality specimens one cannot track down… I had hoped to bring back a few more of the bright yellow stilbite ball specimens from Mali (if you aren’t familiar with them, some are here). Although there were some at the show, they were all too damaged for our collections – I’m not sure that any were new. I suspect that most were the low-quality pieces from the original collecting of this material. I continue to keep an eye out for them, as they are some of the nicest yellow stilbite specimens I’ve ever seen, and they look so great in the cabinet. We’ll see what the future brings. In the meantime, I was able to pick up some excellent prehnite/epidote specimens from Mali, along with a sharp, lustrous vesuvianite.

Prehnite Mali

 Prehnite, Arrondissement Diako, Cercle de Bafoulabé, Kayes Region, Mali – 4.3 cm

New from France, French collector Grégoire de Bodinat recently collected some beautiful specimens at the Mésage Mine, Saint-Pierre-de-Mésage, Isère, France. The Mésage Mine was originally explored in the early-nineteenth century for iron, and the underground workings have been abandoned since the late-nineteenth century. Grégoire had a nice selection of high quality specimens from this classic region – siderite with quartz, ankerite crystals, and sharp bournonite crystals with white barite.

Ankerite and Pyrite on Quartz, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

Ankerite and Pyrite on Quartz, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

Ankerite and Pyrite on Quartz, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

Ankerite and Pyrite on Quartz, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France – 6.6 cm

Pyrite and Quartz on Siderite, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

Pyrite and Quartz on Siderite, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

Siderite with Quartz, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

Siderite with Quartz, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France – 4.9 cm

Bournonite, Barite, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

Bournonite, Barite, Mésage Mine, Saint-Pierre-de-Mésage, Isère, France

The Mésage Mine specimens are on the website here.

Finally, another great new find is from the Rudna Mine, Lubin District, Lower Silesia, Poland. This is of gypsum, var. selenite, with inclusions of herbertsmithite (a rare copper chloride mineral), making the specimens a vibrant green colour. These are gorgeous cabinet specimens! There were not many of these, and only a handful were top quality – I acquired all of the top quality ones.

Gypsum, var. Selenite, Herbertsmithite, Rudna Mine, Lubin District, Lower Silesia, Poland

Gypsum, var. Selenite, with inclusions of Herbertsmithite, Rudna Mine, Lubin District, Lower Silesia, Poland
Crystals up to approximately 3 cm

Displays

The Saint-Marie-aux-Mines show has hosted super displays in recent years.

This year, the main theme was Minerals and Wines (“Origines Pierres et Vins”), with some cases dedicated to matching mineral colours and wine colours, and others featuring the wines and minerals of a particular region.

DisplayRioja
Rioja, Spain – home of great wines and the incomparable pyrites of Navajun
Display by Pedro Conde

DisplayChessy4
The minerals and wines of the Chessy-les-Mines, Rhône

The Chessy case had some amazing specimens – here is a closer look at a few:

DisplayChessy1

Cuprite crystals, Chessy-les-Mines

DisplayChessy2

Azurite, Chessy-les-Mines – a gorgeous specimen,approximately 9 cm

From the Origines Pierres et Vins cases, I loved this Chanarcillo Prousite from the Collection of the Museum National d’Histoire Natural in Paris.

DisplayProustite

Proustite, Chanarcillo, Atacama, Chile – approximately 4 cm

The exposition also included a few cases dedicated to colours in minerals, explaining what causes the colours in certain minerals. These cases included many stunning specimens and here are a few.

DisplayAdamite

This adamite was an amazing hue – approximately 5 cm

This next one looks at a glance like it’s a classic from Amatitlan, Guererro, Mexico, but look at the label… (!)

DisplayAmethyst

Amethyst, Traversella, Piedmont, Italy, approximately 20 cm

This photo doesn’t do this crystal justice – an astounding, lustrous, old-time Red Cloud wulfenite, pristine…

DisplayWulfenite
Wulfenite, Red Cloud Mine, La Paz Co., Arizona – crystal approximatey 4 cm
Collection of the Musée Mineralogie de Mines, Paris Tech

And finally, while we’re on the subject of the causes of colour in minerals, and leaving the displays… I wandered into one dealer with new crystals of “Amegreen” (!). These are Uruguayan amethysts that have been subjected to radiation in a lab, to turn them green. Blech!! (At least the dealer was openly disclosing the origins of the colour.)

Amegreen

Quartz, originally var. amethyst, tortured and turned green in a lab using radiation – marketed as “Amegreen”
Artigas, Uruguay

 Sainte-Marie-aux-Mines is such a great show. I already can’t wait for next year, and hope to see you there!

St. Hippolyte, France

 Beautiful summer evening in Alsace

Posted by: Raymond McDougall on 04.07.2016 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve added a few colourful new specimens in this Morocco Update (click here).  This update includes some particularly fine and unusual pieces, including a super azurite-malachite from the Tasalart Mine, Tafraout, exceptional fluorites from Sidi Said, hot pink cobaltoan dolomites, a glowing jewel of a cobaltoan calcite from the Agoudal Mine in the Bou Azzer district, a mirror-bright skutterudite from the Bouismas Mine and a beautiful, classic twinned cerussite from Touissit.

Azurite and malachite pseudomorphs after azurite, Tazalart Mine, Tafraout, Tiznit Province, Morocco

 Azurite and malachite pseudomorphs after azurite, Tazalart Mine, Tafraout, Tiznit Province, Morocco
Field of view 4.5 cm

Fluorite, Chebka Sidi Said, Midelt, Khenifra Province, Morocco

Fluorite, Chebka Sidi Said, Midelt, Khenifra Province, Morocco – 4.o cm

 Fluorite, Chebka Sidi Said, Midelt, Khenifra Province, Morocco

Fluorite with quartz, Chebka Sidi Said, Midelt, Khenifra Province, Morocco – 5.2 cm

Dolomite, var. cobaltoan dolomite, Agoudal Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco

Dolomite, var. cobaltoan dolomite, Agoudal Mine, Bou Azzer District
Tazenakht, Ouarzazate Province, Morocco – 5.7 cm

Dolomite, var. cobaltoan dolomite, Agoudal Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco

Dolomite, var. cobaltoan dolomite, Agoudal Mine, Bou Azzer District
Tazenakht, Ouarzazate Province, Morocco
Field of view – 3.0 cm

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District
Tazenakht, Ouarzazate Province, Morocco – 13.7 cm

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District,
Tazenakht, Ouarzazate Province, Morocco
Field of view 2.2 cm

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District
Tazenakht, Ouarzazate Province, Morocco
Field of view – 3.0 cm

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco

Calcite, var. cobaltoan calcite, Agoudal Mine, Bou Azzer District
Tazenakht, Ouarzazate Province, Morocco
Field of view – 2.5 cm

Skutterudite, Bouismas Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco

Skutterudite, Bouismas Mine, Bou Azzer District
Tazenakht, Ouarzazate Province, Morocco
Field of view – 2.5 cm

Quartz on Chalcedony, Sidi Rahal, El Kelaa des Sraghna Province, Morocco

Quartz on Chalcedony, Sidi Rahal, El Kelaa des Sraghna Province, Morocco
Field of view – 3.0 cm

Quartz var. Amethyst, Sidi Rahal, El Kelaa des Sraghna Province, Morocco

Quartz var. Amethyst, Sidi Rahal, El Kelaa des Sraghna Province, Morocco
Field of view – 5.0 cm

Cerussite, Touissit, Jerada Province, Oriental Region, Morocco

Cerussite, Touissit, Jerada Province, Oriental Region, Morocco – 3.1 cm

Posted by: Raymond McDougall on 02.23.2016 | Filed under: Latest, Mineral Shows | Comments (0)

I love arriving back in Tucson. Urban field collecting at its finest!

TucsonSunset

There’s an excitement about the Tucson shows – we all feel it.

A bit similar to the way a the Christmas tree each year is evocative of the fun of past Christmases, in Tucson we have our ornamental orange trees in the courtyard at the Hotel Formerly Known as The Inn Suites…

Oranges

The mornings at the start of Tucson 2016 were not quite tropical.

frost

 Palm trees through the frost on the car windshield.

 However,  the Tucson sun is great and by the afternoon there’s a warm sunlight casting shadows.

Tucson 2016

So, into the car and off to the shows all over town in search of fine minerals… but can I just make a small random observation first?

Our rental car flashed this at us regularly,  throughout the trip:

CarWarning

I’m sorry, but if your brain is not already subconsciously running this question in the background for you every day, you’re gonna have issues. Waiting until a car prompts the thought is inadvisable.

OK. I’m done. On to the minerals. (It’s safe to move.)

poolsideThe courtyard mineral localities beckon…

Minerals!

There were great mineral specimens in Tucson this year and this post is just a small glimpse of a few fun things I managed to acquire. Each of the following will be the subject of an update on the website over the coming weeks.

Let’s begin with a new find of gorgeous yellow fluorites from Morocco. These are from the classic fluorite locality, the El Hammam Mine, they are unusually sharp, yellow cubes.

The hue of these fluorites varies, depending on the light source (common for fluorite), from a warmer honey-yellow under halogen, to a slightly brighter yellow in daylight and even a bit bolder under cool-temperature LED lighting. (This effect is different with each specimen, some show it more and some less).

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 4.0 cm

Upon close inspection, many of the crystals contain delicate, fine-lined purple phantoms.

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 2.5 cm

This was not a large find, and I chose the best quality ones available – if you’d like to see more photos, they are in the Morocco Fluorite update (click here).

Next up is the amazing Milpillas Mine in Mexico. It’s no surprise that we are continuing to see more azurites, and a few other things are trickling out too, but this time I was particularly interested in the brochantites. There are not so many (certainly nothing like the azurites) but these are super for the species, and I found a few excellent ones available this year.

Brochantite

Brochantite, Milpillas Mine, Cuitaca, Mun. de Santa Cruz, Sonora, Mexico – 3.9 cm

Brochantite2

Brochantite, Milpillas Mine, Cuitaca, Mun. de Santa Cruz, Sonora, Mexico
Width of this group is 3.2 cm

A bit further away from home, there was a relatively small new find of axinite at Dalnegorsk, Russia. Of course, over the years, some beautiful axinite specimens have been found at Dalnegorsk, some have been identified as axinite-(Mn), some as axinite-(Fe), and I’m told that these ones are axinite-(Fe). As is always the case with axinite, it is incredibly difficult to obtain damage-free specimens, and most from this find did have chipping. However, a few were in superb condition!

Axinite-(Fe)Axinite-(Fe), Bor Mine, Dal’negorsk, Primorskiy Kray, Russia
Field of view approximately 4 cm

Also from the Dalnegorsk mining complex, a newer mine has produced some wonderful new calcite specimens. The Yushnoe Mine is a newer mine and to date has produced virtually no fine mineral specimens. In 2015, a pocket of calcite crystals contained some beautiful twins. This was not a large or prolific find at all, and I found almost no specimens were undamaged, but I did find them! They show excellent twinning, with the same form as the now-classic twinned yellow calcites from the Sokolovskoe Mine, Rudniy, Kazakhstan. Beautiful!

YushnoeCalciteCalcite, Yushnoe Mine, Dal’negorsk, Primorskiy Kray, Russia
Field of view approximately 3.5 cm

From Canada, a recent expedition to Rapid Creek, Yukon, produced some fine lazulite specimens. This is a very remote locality and collecting there is so expensive that it is rarely undertaken these days. Many specimens from the find debuted in Tucson, and we (David K. Joyce and I) acquired the finest.

Lazulite2

Lazulite, Rapid Creek, Dawson Mining District, Yukon, Canada
Largest crystal 1.5 cm

Lazulite1Lazulite with Kulanite, Rapid Creek, Dawson Mining District, Yukon, Canada – 5.7 cm

One of the great things about Tucson is of course the chance to reconnect with mineral friends and colleagues from all over the world, and sometimes they have brought some pretty amazing things along with them. Not all of these are new finds by any means, but sometimes some remarkable specimens surface in Tucson.

One such find was strontianite from an Austrian collection. Strontianite is a relatively common mineral, but great specimens are not common. Typically when we think of the mineral strontianite – let’s face it, IF we even think of it at all – we think of fuzzy-looking aggregates of tiny crystals or relatively unattractive specimens. Perhaps that’s not fair (sorry strontianite!) and there are of course exceptions, including a small number of specimens from Scotland, Illinois and the Alps. And some of the finest strontianite crystals in the world come from Oberdorf an der Laming, Laming valley, Bruck an der Mur, Styria, Austria. The crystals occur in a variety of habits, with quartz-like prisms, blocky hexagonal prisms and elongated dogtooth-style crystals. I was very happy to have found a small suite of exceptionally well-crystallized strontianites from Oberdorf an der Laming in Tucson.

StrontianiteStrontianite, Oberdorf an der Laming, Laming valley, Bruck an der Mur, Styria, Austria
Crystal 1.2 cm

Strontianite2Strontianite, Oberdorf an der Laming, Laming valley, Bruck an der Mur, Styria, Austria
Field of view approximately 3.5 cm

Strontianite3

Strontianite, Oberdorf an der Laming, Laming valley, Bruck an der Mur, Styria, Austria
Field of view approximately 2 cm

Another great thing about reconnecting with everyone in Tucson is the chance to learn from mineral friends. You know, we all end up with these specimens from all over the world, and then we take them back to our little lairs, and inevitably we have more work done on them. So there are always new finds, identifications, and re-identifications of minerals.

In Tucson this year, I learned that last year’s find of super tetrahedrite crystals at the Mundo Nuevo Mine was in fact a find of crystals of tennantite. Of a large number of specimens tested at Harvard, only one turned out to be tetrahedrite. Almost all turned out to be tennantite (a small number were intermediate, tennantite-dominant). Which is fun – they were already great tetrahedrite, but they are super for tennantite. I have a few left and although they are presumably tennantite, I have taken them off the site pending confirmatory analysis, and then they will be back on. For those of you who might not have seen them when I posted them originally, they are sharp and lustrous – here are a couple.

100740(2)(fov4.0)

Tennantite, Mundo Nuevo Mine, Huamachuco, Sanchez Carrion Province, La Libertad Dept., Peru
Field of view 4.0 cm

100742(1)(8.2)Tennantite, Mundo Nuevo Mine, Huamachuco, Sanchez Carrion Province, La Libertad Dept., Peru – 8.2 cm

Related to this finding, it was also discovered that there are some tennantite specimens with the rare mineral lautite on them. These are microscopic crystals and rosettes – a mineral that is rarely found at all, let alone in crystals. Here’s a photo. (By the way, Dave still has a few of these lautites available on his website – I’m including a link to them at the end of this post, if you are interested.

lautite

Lautite, Mundo Nuevo Mine, Huamachuco, Sanchez Carrion Province, La Libertad Dept., Peru
Field of view 2mm.
David K. Joyce photo.

Speaking of identifications, one find that first came to light last year has turned out to be something special. Last year you may have seen (and may even have acquired) specimens of “chrysocolla over malachite pseudomorphs after azurite” from the Luputo Mine, Lubumbashi, Democratic Republic of the Congo. Thanks to analysis conducted by Dr. Hexiong Yang at the University of Arizona, we now know they are in fact not chrysocolla, but ajoite. This is a remarkable development – ajoite has not been known in display specimens, so this is a first! (Ajoite is best known from the ajoite-included quartz crystals from Musina, South Africa).  I was very happy to be able to acquire a few of these specimens in Tucson!

Ajoite2Ajoite over Malachite pseudomorph after Azurite
Luputo Mine, Lubumbashi, Democratic Republic of the Congo
Field of view 3.5 cm

Ajoite3

Ajoite over Malachite pseudomorph after Azurite
Luputo Mine, Lubumbashi, Democratic Republic of the Congo
Field of view 2.5 cm

Tucson Beyond the Minerals

I’ll spare you the stories of all of the great get-togethers with mineral friends, but I’d like to share a couple.

Canadian collector and dealer Ray Hill hosts fun dinners at his rented place in Tucson each year. Not only is he a great cook, but he also assembles such good groups together that it is always both interesting and a good time. The group included Ray Hill, David Joyce, John Montgomery, Marie and Terry Huizing, David Wilber and Larry Venezia. I wish I had a photo from this evening’s highlight, but it was too dark out to capture the mood without a proper camera setup. Ray had brought a portable propane campfire from Canada. (Never seen one before…) After dinner we moved outdoors… and what is a campfire without a song or two?  Many of you know that David Joyce has written, and plays and sings, great mineral songs (link at the end of this post) – so Dave brought out his guitar and we had good fun singing mineral songs around our Tucson campfire under the stars.

The other one I’d like to share is a photo from a dinner we look forward to every year, with Si and Ann Frazier, and Frank and Wendy Melanson. Always a fun evening, with good food, stories, laughs, and some mineral show-and tell, so it’s hardly a time that prompts serious reflection (!). However when I was looking at this photo afterward, I was struck by the knowledge and experience in this room. You are looking not only at five of the most knowledgeable mineral people out there, but the five people in this photograph have been responsible, directly and indirectly, for the preservation and placement of uncounted tens of thousands of the world’s fine mineral specimens into museums and private collections.

Dinner

From left to right, Si and Ann Frazier, Wendy Melanson, David K. Joyce and Frank Melanson

Although we all wish Tucson would never end, somehow it ends too soon every year…

Last Light

Last sunlight, as Tucson shadows fall

Happy to be back home, to the forest shadows…

Snowshadows

… and where the snow crunches underfoot with each step in the winter woods.

Final Snowshadow

Links

(1) For the lautite specimens at davidkjoyceminerals.com, click here.

(2) For the mineral songs click here (“The Mineral Dealer” is an awesome song for Tucson season.)

Posted by: Raymond McDougall on 02.22.2016 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve posted a new Morocco Fluorite Update (click here) with super yellow fluorite crystals from a small recent find at the El Hammam Mine. These are great yellow fluorite specimens!

The hue of these fluorites varies, depending on the light source (common phenomenon for fluorite). They appear a warmer honey-yellow under halogen, a slightly brighter yellow in daylight and even a bit bolder under cool-temperature LED lighting. This effect is different with each specimen, some show it more and some less. The depth of the yellow colour also varies from one specimen to the next thanks to the fine, faint purple phantoms in many of the crystals.

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 4.0 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 2.5 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Fluorite with Pyrite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 14.8 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 4.0 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 11.3 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 2.5 cm

 Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 7.2 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 4.1 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 7.6 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco – 5.4 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, MoroccoFluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 4.0 cm

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco

Fluorite, El Hammam Mine, Meknes, Meknes-Tafilalet Region, Morocco
Field of view 2.5 cm

Posted by: Raymond McDougall on 10.17.2015 | Filed under: Latest, Recent Mineral Updates | Comments (0)

I’ve added a new USA Update (click here) with excellent specimens from various localities, most of which were collected between 25 and 50 years ago. Some of the specimens are from the collection of Robert Bartsch.

Rhodochrosite, American Tunnel  Mine , Silverton, Colorado, USARhodochrosite, American Tunnel Mine, Silverton, San Juan Co., Colorado – 12.5 cm
From the collection of Robert Bartsch

Microcline var. Amazonite with Smoky Quartz, Jack Rabbit Mine, Crystal Creek nr Crystal Peak, Lake George District, Teller Co., Colorado, USA.

Microcline var. Amazonite with Smoky Quartz, Jack Rabbit Mine, Crystal Creek near Crystal Peak,
Lake George District, Teller Co., Colorado – 5.7 cm
From the collection of Robert Bartsch

Microcline var. Amazonite with Smoky Quartz, Jack Rabbit Mine, Crystal Creek nr Crystal Peak, Lake George District, Teller Co., Colorado, USA.

Microcline var. Amazonite with Smoky Quartz, Jack Rabbit Mine, Crystal Creek near Crystal Peak,
Lake George District, Teller Co., Colorado – 4.8 cm
From the collection of Robert Bartsch

Mona Mine, Specimen Rock Area, nr Colorado Springs, El Paso Co., Colorado, USA

Microcline var. Amazonite, Mona Mine, Specimen Rock Area, near Colorado Springs,
El Paso Co., Colorado – 4.1 cm

Fluorapatite, King Lithia Mine, Greyhound Gulch, Keystone District, Pennington Co., South Dakota

Fluorapatite, King Lithia Mine, Greyhound Gulch, Keystone District, Pennington Co., South Dakota
Field of view approx. 3.5 cm
From the collection of Robert Bartsch

Fluorapatite, King Lithia Mine, Greyhound Gulch, Keystone District, Pennington Co., South DakotaFluorapatite, King Lithia Mine, Greyhound Gulch, Keystone District, Pennington Co., South Dakota
Crystal 1.1 cm
From the collection of Robert Bartsch

Millerite, Platte River, MissouriMillerite, Platte River, Missouri – crystal group 1.5 cm

Chrysocolla, Quartz, Planet Mine, Planet, Buckskin Mtns., La Paz Co., Arizona, USAChrysocolla, Quartz, Planet Mine, Planet, Buckskin Mtns., La Paz Co., Arizona
Field of view approx. 6 cm

Chrysocolla and malachite, Morenci Mine, Greenlee Co., ArizonaChrysocolla and malachite, Morenci Mine, Greenlee Co., Arizona – 4.9 cm

Fluorite, Cave-in-Rock District, Hardin Co., Illinois

Fluorite, Cave-in-Rock District, Hardin Co., Illinois
Field of view approx. 5 cm

Goethite, Goethite Hill, Lake George District, Park Co., Colorado, USAGoethite, Goethite Hill, Lake George District, Park Co., Colorado – 6.1 cm

Barite, Pack Rat Mine, Pryor Mtns, Carbon Co., Montana, USA

Barite, Pack Rat Mine, Pryor Mtns, Carbon Co., Montana
Field of view approx. 4.5 cm

Quartz, variety Herkimer Diamond, Crystal Grove, Lassellsville, Town of Ephrata, Fulton Co., New York, USA

Quartz, var. Herkimer Diamond, Crystal Grove, Lassellsville, Town of Ephrata, Fulton Co., New York
Crystal 1.2 cm

Posted by: Raymond McDougall on 07.11.2015 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

In this France Update (click here), I am including the first of the specimens from the 2015 Ste. Marie Show.

Despite the host country, the show is truly not full of French mineral specimens, given their relative scarcity, and the ones that are there are highly prized. Nonetheless, I was able to acquire a few excellent French pieces.

Beautiful deep golden barite crystals from a find at La Côte d’Abot, near Saint Saturnin, Puy-de-Dôme, Auvergne.

Barite, La Côte d’Abot, Saint Saturnin, Puy-de-Dôme, Auvergne, France

 Barite, La Côte d’Abot, near Saint Saturnin, Puy-de-Dôme, Auvergne, France – 7.1 cm

Barite, La Côte d’Abot, Saint Saturnin, Puy-de-Dôme, Auvergne, France

Barite, La Côte d’Abot, near Saint Saturnin, Puy-de-Dôme, Auvergne, France – 4.3 cm

Barite, La Côte d’Abot, near Saint Saturnin, Puy-de-Dôme, Auvergne, France.

Barite, La Côte d’Abot, near Saint Saturnin, Puy-de-Dôme, Auvergne, France – 5.3 cm

Barite, La Côte d’Abot, near Saint Saturnin, Puy-de-Dôme, Auvergne, France.

Barite, La Côte d’Abot, near Saint Saturnin, Puy-de-Dôme, Auvergne, France – 4.8 cm

I also found a small stash of bournonite crystal groups from the contemporary classic locality, Les Malines District, Saint-Laurent-Le-Minier, Gard, Languedoc-Roussillon.

Bournonite, Les Malines District, Saint-Laurent-Le-Minier, Gard, Languedoc-Roussillon, France

Bournonite, Les Malines District, Saint-Laurent-Le-Minier, Gard, Languedoc-Roussillon, France – 6.8 cm

Bournonite, Les Malines District, Saint-Laurent-Le-Minier, Gard, Languedoc-Roussillon, France

Bournonite, Les Malines District, Saint-Laurent-Le-Minier, Gard, Languedoc-Roussillon, France – 6.1 cm

Bournonite, Les Malines District, Saint-Laurent-Le-Minier, Gard, Languedoc-Roussillon, France

Bournonite, Les Malines District, Saint-Laurent-Le-Minier, Gard, Languedoc-Roussillon, France – 5.3 cm

From Buxières-les-Mines, there was one fluorite specimen that really caught my eye. We are used to seeing fluorite from occurrences where the habit is one of stacked cubes, but how often do we get to see stacked dodecahedra?

Fluorite, Buxières-les-Mines, Allier, Auvergne, France

Fluorite, Buxières-les-Mines, Allier, Auvergne, France – field of view approximately 3.0 cm

From an uncommon locality for fine mineral specimens, some brilliant, sharp alpine hematite.

Hematite, L'Alpe d'Huez, Oisans, Isère, France

Hematite, L’Alpe d’Huez, Oisans, Isère, France – 10.1 cm

100862(3)

Hematite, L’Alpe d’Huez, Oisans, Isère, France – field of view approximately 2.5 cm

Posted by: Raymond McDougall on 02.26.2015 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve added some superb new specimens on the website in this week’s South Africa Update (click here).

A small pocket at the N’Chwaning II Mine recently produced some exquisite new inesite specimens. These are very sharp and intricate, and in superb condition. I was lucky to have the first chance at these and selected out only a few specimens, the ones I judged to be the best.

Inesite, N'Chwaning II Mine, Kalahari Manganese Fields, South AfricaInesite, N’Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa – 4.5 cm

N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South AfricaInesite, N’Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa – 5.0 cm

N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South AfricaInesite, N’Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa – 3.8 cm

This update also includes a couple of hematite specimens, including a brilliant, top, connoisseur-level specimen of ettringite and hematite together, which is ex Marshall Sussman – this is an absolute killer!

Ettringite, Hematite - N'Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South AfricaEttringite, Hematite – N’Chwaning II Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa – 6.7 cm

And finally in this update I have included some gorgeous green fluorite specimens from Riemvasmaak.

Fluorite, Riemvasmaak, Northern Cape Province, South AfricaFluorite, Riemvasmaak, Northern Cape Province, South Africa – 10.8 cm

Fluorite, Riemvasmaak, Northern Cape Province, South AfricaFluorite, Riemvasmaak, Northern Cape Province, South Africa – 8.3 cm

Fluorite, Riemvasmaak, Northern Cape Province, South Africa

Fluorite, Riemvasmaak, Northern Cape Province, South Africa
Field of view approximately 3 cm

Fluorite, Riemvasmaak, Northern Cape Province, South Africa

Fluorite and Quartz, Riemvasmaak, Northern Cape Province, South Africa
Field of view approximately 4 cm