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| The Photo Database is for reference only. These minerals are not for sale. |
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Products are separated alphabetically, letters that are underlined contain products.
If a letter is red you are currently viewing that page. |
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Columbite
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| Big Smoke mine, Custer Co., South Dakota, United States |
| Grenier Collection |
| Chemical Formula: Fe++Nb2O6 |
Crystal to 5 x 2.5cm. |
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Comancheite
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| Mariposa Mine, Terlingua, Brewster Co., Texas, United States |
| Micro crystals of Comancheite to 0.3 mm. |
Cooke Collection
Type Locality
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| Chemical Formula: Hg13(Cl,Br)8O9 |
You have to see this specimen under a scope to really, really appreciate it. Originally described by Andy Roberts, Ansell, and Pete Dunn in 1981 as an mercury oxychloride-Bromide occuring as "anhedral red masses and orange-red to yellow acicular crystals". Observing this under the scope indeed that what they are and actually more. On this specimen you will see tiny acicular sprays and larger crystals perched on top of etched calcite pilars. It's a fascinating occurence. This is an excellent, rich specimen of a mineral found in only two worldwide localities thus far. |
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Conichalcite
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| Gold Hill mine, Tooele Co., Utah, United States |
Jungles Collection
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| Chemical Formula: CaCu(AsO4)(OH) |
Bright translucent green stacked beads of Conichalcite forming tentacle-like growths with Quartz. |
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Conichalcite
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| near Mammoth, Copper Creek, Pinal Co., Arizona, United States |
| Chemical Formula: CaCu(AsO4)(OH) |
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Conichalcite
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| Huercal Overa mine, Almeria Province, Spain |
| DeVito Collection |
| Chemical Formula: CaCu(AsO4)(OH) |
Bright green spherical crystals to less than 0.5mm. |
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Conichalcite
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| Gold Hill mine, Tooele Co., Utah, United States |
| DeVito COllection |
| Chemical Formula: CaCu(AsO4)(OH) |
Lime green botryoidal crystals to 3mm across. |
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Copyright © 2000 - 2010 Dakota Matrix Minerals
All photos by Dakota Matrix and are Copyrighted © and may not be used without permission
Last modified: September 7, 2010 |
