Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $45.00
- Reduced Price
- $25.00
- Locality
- Kamariza mine, Laurium, Greece
- Formula
- Zn2AsO4(OH)
- Size
- 5.5 x 5 x 4.5 cm - Sm Cabinet
- Tagged
- arsenate
Cuprian green Adamite crystallized into fine prismatic crystals and sugary clusters. There is a cluster of tiny 2mm Calcite crystals also. Very good piece of a common mineral but with a good rich green color.
- Availability
- Available
- Price
- $35.00
- Featured
- Featured in Special Editions
- Locality
- Laurium, Attika, Greece
- Formula
- Cu2+6Ce(AsO4)3(OH)6ยท3H2O
- Size
- 3 x 3 x 2 cm - Thumbnail
- Tagged
- arsenate, copper, REE mineral
Light green "fuzzy" crystals with Azurite.
- Availability
- Available
- Price
- $35.00
- Locality
- Coal Hill Lead vein, Rossie, St. Lawrence Co., New York, United States
- Formula
- TiO2
- Size
- 3 x 2.5 x 2 cm - Thumbnail
Translucent blue crystals less than 1mm with a unique square termination.
- Availability
- Sold
- Locality
- Stanley Butte, Graham Co., Arizona, United States
- Formula
- Ca3Fe3+2(SiO4)3
- Size
- 4 x 4.5 x 3 cm - Miniature
A marvelous greenish yellow Andradite specimen with crystals up to 1cm.
- Availability
- Available
- Price
- $75.00
- Locality
- Tagilsk, Urals, Russia
- Formula
- Cu7S4
- Size
- 2.5 x 2 x 2 cm - Thumbnail
- Tagged
- sulfide, copper
It is hard to tell from the photos but the brownish are tarnished Anilite. There are some spots showing the typical greyish blue color.
- Availability
- Available
- Price
- $35.00
- Featured
- Featured in Special Editions
- Locality
- Redruth, Cornwall, England
- Formula
- KFe2+3(Si3Al)O10(OH)2
- Size
- 7 x 5.5 x 3 cm - Sm Cabinet
Bronzy black Annite flakes throughout mass.
Biotite has historically been treated as an individual mineral species by geologist. Rieder et. al in the Canadian Mineralogist v. 36 (1998), reclassified and placed Biotite within the Annite-Phlogopite series.
Biotite is a phyllosilicate of the Mica group and is classified as an ordinary (True or Common) mica meaning it has flexible cleavage plates. For more information on Mica minerals and other phyllosilicates please reference our article - Click Here.
