Rare Mineral Specimens - search page
- Availability
- Available
- Price
- $50.00
- Locality
- Mina Ojuela, Mapimi, Durango, Mexico
- Formula
- Zn2AsO4(OH)
- Size
- 5 x 6 x 4 cm - Sm Cabinet
- Tagged
- arsenate
Yellowish green crystals clusters to over 2cm and individual crystals to 8mm.
- Availability
- Available
- Price
- $20.00
- Locality
- Chessy-les-Mines, Le Bois d'Oingt, Rhone, Rhone-Alpes, France
- Formula
- Cu2+6Y(AsO4)3(OH)6·3H2O
- Size
- 1.5 x 1 x 1 cm - Thumbnail
Light fibrous Agardite with Conichalcite(?). I an guessing this is Agardite-(Y).
- Availability
- Sold
- Price
- $50.00
- Locality
- El Dragón mine, Quijarro, Potosí Dept., Bolivia
- Formula
- NiSe4+O3·2H2O
- Size
- 2.5 x 2.5 x 3 cm - Thumbnail
- Special Info
- EDS Confirmed
Light pink, glassy crystals of cobaltoan Ahfeldite to 1mm in vugs of Penroseite with bright blue Chalcomenite. All of these minerals were confirmed by EDS.
- Availability
- Available
- Price
- $145.00
- Locality
- New Brancepeth Colliery, Deerness Valley, Durham, England
- Formula
- BaCa(CO3)2
- Size
- 6.5 x 5 x 3.5 cm - Sm Cabinet
- Tagged
- carbonate
Good coverage of colorless to white, 1-2mm, pseudohexagonal dipyramids showing horizonatal striations. These crystals are perfectly formed and euhedral. Alstonite is the dimorph of barytocalcite. and also paralstonite. Swap Ca and Ba in the formula and you have Barytocalcite. Drop calcium all together and you get Witherite, which forms the bulk of this specimen. The Alsonite crystallization follows natural voids between Witherite crystals. The Witherite occurs as discoidal crystals to 1.3cm, but there are just a few of these. The rest of the Witherite are large anhedral forms seemingly deformed by etching. Cool specimen. It is similair to the Witherite pictured on Mindat from this locality. Note that Alstonite looks like it occurs on that one too if you look closely.
- Availability
- Available
- Price
- $35.00
- Reduced Price
- $30.00
- Locality
- Tagilsk, Urals, Russia
- Formula
- Cu7S4
- Size
- Capsule
- Tagged
- Rare Species Sale
4mm grain in capsule.
- Availability
- Available
- Price
- $35.00
- Locality
- Lealtad Mine, Bellota ravine, Chóvar, Castellón, Spain
- Formula
- CuFe3+2(AsO4)2(OH)2·4H2O
- Size
- 4 x 3 x 1.5 cm - Miniature
Thin coverage of very minute, less than 0.1mm, acicular green crystals.
