Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $20.00
- Locality
- Lancaster, Worcester Co., Massachusetts, United States
- Formula
- Al2OSiO4
- Size
- 1.2 x 1 x 0.6 cm - Thumbnail
A section of a Andalusite showing a chiastolite twining.
- Availability
- Available
- Price
- $40.00
- Locality
- Nightingale dist., Pershing Co., Nevada, United States
- Formula
- Ca3Fe3+2(SiO4)3
- Size
- 3.8 x 3 x 2 cm - Miniature
Fine Andradite crystals to 9mm. The color is darker than the photos.
- Availability
- Available
- Price
- $25.00
- Locality
- Northwest of Sasabe, Arizona, United States
- Formula
- PbSO4
- Size
- 8 x 5 x 3.5 cm - Sm Cabinet
Grey alterations rim around parent Galena with blue Chrysocolla.
- 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.
- Availability
- Sold
- Locality
- Apex mine, Lander Co., Nevada, United States
- Size
- 40 x 27 x 5 cm - Cabinet
- Special Info
- Radioactive!!
26 rare uranium minerals, which include Cejkaite, Autunite, Torbernite, Rutherfordine. I accidentally placed a Metaheinrichite in the flat. The Cejkaite glows a stunning green in the sunlight.
- Availability
- Available
- Price
- $25.00
- Locality
- Huelva, Andalusia, Spain
- Formula
- CaCO3
- Size
- 4.5 x 2.5 x 2 cm - Miniature
- Tagged
- carbonate
Cool oolitic Aragonite, variety ktypeite.
