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Posted by: Raymond McDougall on 08.29.2019 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve posted the first 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)

These wonderful high-quality specimens from John’s collection are from a wide range of localities (classic to contemporary) and include a variety of minerals.

 Anatase, Kharan, Balochistan, PakistanAnatase, Kharan District, Balochistan, Pakistan – 2.9 cm

 Andalusite, ItalyAndalusite, Chiavenna, Sondrio Province, Lombardy, Italy – 4 cm crystal

Aragonite, Giumentaro Mine, Capodarso, Enna, Sicily, Italy

 Aragonite, Giumentaro Mine, Capodarso, Enna, Sicily, Italy – 9.6 cm

Aragonite, Giumentaro Mine, Capodarso, Enna, Sicily, Italy (ultraviolet)

Same specimen as above, illuminated by shortwave ultraviolet light

Aragonite, Giumentaro Mine, Capodarso, Enna, Sicily, Italy (phosphorescence)

Same specimen as above, exhibiting phosphorescence after UV illumination

 Atacamite, Lily Mine, Pisco Umay, Ica Dept., PeruAtacamite, Lily Mine, Pisco Umay, Ica Dept., Peru – 6 cm

Azurite, malachite, Kerrouchen, Khenifra Province, Morocco

Azurite, malachite, Kerrouchen, Khenifra Province, Morocco – 2 cm parallel-growth crystals

Babingtonite, Prehnite, Qiaojia Co., Yunnan, China

Babingtonite, Prehnite, Qiaojia Co., Yunnan, China
Field of view 6 cm

Beryl, var. alkalai beryl, Deo Darrah, Khash & Kura Wa Munjan Districts, Badakshan, Afghanistan Beryl, var. alkali beryl, Deo Darrah, Khash & Kura Wa Munjan Districts, Badakshan, Afghanistan – 3.2 cm

Beryl, var aquamarine, Huya Deposit (Pingwu Beryl Mine), Mt. Xuebaoding, Pingwu County, Sichuan Province, China

Beryl, var aquamarine, Huya Deposit (Pingwu Beryl Mine), Mt. Xuebaoding,
Pingwu County, Sichuan Province, China – 4.7 cm

Beryl, var goshenite, Huya Deposit (Pingwu Beryl Mine), Mt. Xuebaoding, Pingwu County, Sichuan Province, China

Beryl, var. goshenite, Huya Deposit (Pingwu Beryl Mine), Mt. Xuebaoding,
Pingwu County, Sichuan Province, China – 6.1 cm

This next calcite is so great from both sides, in both normal and UV light, I can’t choose only one photo. Here’s one of each side, in each light:

Calcite, Fozichong Deposit, Cenxi Co, Guangxi, China

Calcite, Fozichong Deposit, Cenxi Co, Guangxi, China – 9.7 cm

Calcite, Fozichong Deposit, Cenxi Co, Guangxi, China

Same crystal as above, under ultraviolet light

Calcite, Fozichong Deposit, Cenxi Co, Guangxi, China

Same crystal as above, other side

Calcite, Fozichong Deposit, Cenxi Co, Guangxi, China

Same as above, ultraviolet light

Wenshan Mine, Wenshan, Yunnan, China

Calcite, Wenshan Mine, Wenshan, Yunnan, China – 8.8 cm

Calcite, Fluorite Location:		Xianghualing Mine, Linwu Co., Chenzhou, Hunan, China

Calcite on fluorite, Xianghualing Mine, Linwu Co., Chenzhou, Hunan, China – 8.2 cm

Carrollite, Kamoya South II Mine, Kamoya, Kambove District, Katanga, Democratic Republic of the Congo

Carrollite, Kamoya South II Mine, Kamoya, Kambove District, Katanga, Democratic Republic of the Congo – 2.4 cm

Carrollite, Kamoya South II Mine, Kamoya, Kambove District, Katanga, Democratic Republic of the Congo

Carrollite, Kamoya South II Mine, Kamoya, Kambove District, Katanga, Democratic Republic of the Congo – 2.2 cm

Cavansite on stilbite, Wagholi, Pune District, Maharashtra, India

Cavansite on stilbite, Wagholi, Pune District, Maharashtra, India – 5.2 cm

Chabazite, Roadcut at Bavdhan, Pune District, Maharashtra, India

Chabazite, Stilbite, Roadcut at Bavdhan, Pune District, Maharashtra, India – 10 cm

Cuprite, 	Rubstsovkoe, Rudnyi Altai, Altaiskii Krai, Russia

Cuprite, Rubstsovkoe, Rudnyi Altai, Altaiskii Krai, Russia – 4.4 cm

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

Datolite on quartz, Bor Pit, Dal’negorsk, Primorskiy Kray, Russia – 5.3 cm

Dioptase, Tsumeb Mine, Otjikoto Region, Namibia

Dioptase on calcite, Tsumeb Mine, Otjikoto Region, Namibia – 4.5 cm

Fluorite, Xianghualing Mine, Linwu Co., Chenzhou, Hunan, China

Fluorite, Xianghualing Mine, Linwu Co., Chenzhou, Hunan, China – 7.6 cm

Posted by: Raymond McDougall on 11.15.2015 | Filed under: Latest, Recent Mineral Updates | Comments (0)

 

I’ve posted a new Brazil Update (click here), with superb, diverse specimens.

From the world famous morganite finds at the Urucum Mine, this crystal is likely from the 1973 pocket.

Beryl, var. Morganite, Urucum Mine,  Galileia, Minas Gerais, BrazillBeryl, var. Morganite, Urucum Mine, Galileia, Minas Gerais, Brazil – 7.9 cm

A one-of-a-kind specimen, this aqua-colours montebrasite crystal was found in a pocket in the 1970s. Most of the pocket material was etched and did not exhibit crystal faces.

Montebrasite, Lavra da Ilha, Taquaral, Itinga, Minas Gerais, BrazilMontebrasite, Lavra da Ilha, Taquaral, Itinga, Minas Gerais, Brazil – 3.9 cm

From a new recent find, a small pocket at Novo Horizonte produced a small number of remarkable crystals, sold to me under the label “synchysite”. 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) 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. 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!

Synchysite, Novo Horizonte, Bahia, BrazilRhabdophane pseudomorph after Parisite, Novo Horizonte, Bahia, Brazil – 3.4 cm

Synchysite, Novo Horizonte, Bahia, BrazilRhabdophane pseudomorph after Parisite, Novo Horizonte, Bahia, Brazil – 2.6 cm

Synchysite, Novo Horizonte, Bahia, BrazilRhabdophane pseudomorph after Parisite, Novo Horizonte, Bahia, Brazil – 2.0 cm


Synchysite, Novo Horizonte, Bahia, Brazil Rhabdophane pseudomorph after Parisite – 2.4 cm

Also from Novo Horizonte, a tabular crystal of rutilated quartz, in superb condition and with bright prismatic golden rutile crystals:

Rutilated Quartz, Novo Horizonte, Bahia, Brazil

Rutilated Quartz, Novo Horizonte, Bahia, Brazil – 7.6 cm

From Brumado, excellent pleochroic crystals of uvite tourmaline, exhibiting purple hues at certain angles and greenish hues when viewed from other angles. The first two photographs below are views of the same uvite crystal from different viewing angles.

Uvite Tourmaline (Pleochroic), Magnesite,  Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, BrazilUvite Tourmaline (Pleochroic), Magnesite, Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, Brazil
Crystal 0.8 cm

Uvite Tourmaline (Pleochroic), Magnesite,  Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, BrazilUvite Tourmaline (Pleochroic), Magnesite, Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, Brazil
Same crystal as prior photo

Uvite Tourmaline (Pleochroic), Magnesite,  Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, BrazilUvite Tourmaline (Pleochroic), Magnesite, Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, Brazil
5.4 cm

Uvite Tourmaline (Pleochroic), Magnesite,  Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, Brazil Uvite Tourmaline (Pleochroic), Magnesite, Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, Brazil
Crystal 1.2 cm

Another unusual tourmaline for Brumado, green dravite crystals are quite uncommon.

Dravite Tourmaline, Brumado (Bom Jesus dos Meiras), Bahia, Brazil

Dravite Tourmaline, Magnesite, Brumado (Bom Jesus dos Meiras), Bahia, Brazil – 1.5 cm crystal

The update also includes specimens from other well-known finds and localities

Elbaite Tourmaline, Barra do Salinas, Coronel Murta, Minas Gerais, Brazil Elbaite Tourmaline, Barra do Salinas, Coronel Murta, Minas Gerais, Brazil – 2.9 cm

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

Brazilianite, Telirio Claim, Linoplois, Divino das Laranjeiras, Brazil
Crystals to 3 cm

Fluorapatite, Bertrandite, Faria Mine, Golconda District, Governador Valadares, Minas Gerais, Brazil

Fluorapatite, Bertrandite, Faria Mine, Golconda District, Governador Valadares, Minas Gerais, Brazil
Crystal 1.5 cm

Hematite (Iron Rose). Coluna Mine, Miguel Burnier District, Ouro Preto, Minas Gerais, Brazil

Hematite (Iron Rose). Coluna Mine, Miguel Burnier District, Ouro Preto, Minas Gerais, Brazil
Field of view approximately 4 cm

Hydroxylherderite, Morro Redondo Mine, Coronel Murta, Minas Gerais, Brazil

Hydroxylherderite, Morro Redondo Mine, Coronel Murta, Minas Gerais, Brazil – 5.3 cm

Posted by: Raymond McDougall on 10.14.2014 | Filed under: Latest, Recent Mineral Updates | Comments (0)

This Brazil Update (click here) features a few selected excellent pieces from Brazil, from the unusual to the amazing.

Brazilianite, Telirio

Brazilianite on Albite, Telirio Mine, Linopolis , Divino das Laranjeiras, Minas Gerais, Brazil – 7.5 cm

The update includes two remarkable brazilianite specimens from the closed Telirio Mine, a classic Medina aquamarine, a fantastic rutilated quartz from Novo Horizonte, tourmalines, Sapo fluorapatites, a super Brumado dolomite, blue quartz, and a Novo Horizonte hematite that is a black mirror.

aquamarine medina

Beryl var. Aquamarine, Medina, Jequitinhonha Valley, Minas Gerais, Brazil – 5.5 cm

Rutilated quartz

Rutilated Quartz, Novo Horizonte, Bahia, Brazil – 8.2 cm