Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Locality
- Lovelock mine, Churchill Co., Nevada, United States
- Formula
- Ca2Cu9(AsO4)4(SO4)0.5(OH)9 9H2O
- Size
- 6 x 4 x 4 cm - Sm Cabinet
- Tagged
- arsenate, copper
I have previously sold this occurence Tangdanite as Clinotyrolite, which has been discredited as being the same as Tangdanite. Mindat also states: "Unique combination of elements (the only Ca-Cu arsenate-sulphate mineral known)."
The crystals are stunning in-hand and even more so under the microscope. These are flat-lying to about 2mm across. Some of crystals are free-standing.
- Availability
- Available
- Price
- $150.00
- Locality
- Jote mine, Pampa Larga dist., Tierra Amarilla, Copiapó, Atacama, Chile
- Formula
- Ca5Al2(AsO4)4(OH)4 12H2O
- Size
- 3 x 3 x 2.5 cm - Thumbnail
- Tagged
- arsenate
- Special Info
- Type & Only Locality
Tiny, less than 1mm, colorless crystal plates of Tapiaite with bluish green Rruffite. Very rare.
- Availability
- Sold
- Locality
- Big Indian Copper mine, San Juan Co., Utah, United States
- Formula
- Ca2Cu9(AsO4)4(CO3)(OH)8·11H2O
- Size
- 6 x 5 x 4.5 cm - Sm Cabinet
- Tagged
- arsenate, copper
Robin's egg bluish green crusts on sandstone. Arnold Hampson published an article in Rocks & Minerals magazine in 1993, V68 n6. In this article he describes this occurence as: from the Blue Jay pit occuring as sky-blue foliated crusts and masses filling void spaces between sand grains. Arnold analyzed the material with microprobe and x-ray diffraction.
- Availability
- Sold
- Locality
- Majuba Hill mine, Pershing Co., Nevada, United States
- Formula
- Cu(UO2)2(AsO4)2·8H2O
- Size
- 5.5 x 5.5 x 2 cm - Sm Cabinet
- Tagged
- arsenate, copper
Glassy green plates flat on matrix to 7mm.
- Availability
- Sold
- Locality
- Majuba Hill mine, Pershing Co., Nevada, United States
- Formula
- Cu(UO2)2(AsO4)2·8H2O
- Size
- 7 x 5 x 2.5 cm - Sm Cabinet
- Tagged
- arsenate, copper
- Special Info
- Radioactive!!
Excellent glassy green tabular crystals to 6mm across.
