Collectible Mineral Specimens Under $50
- Availability
- Sold
- Locality
- Nightingale dist., Pershing Co., Nevada, United States
- Formula
- Ca3Fe3+2(SiO4)3
- Size
- 2.5 x 3 x 2.6 cm - Thumbnail
Attractive set of Andradite crystals to to 1.5cm in Quartz.
- 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
- Available
- Price
- $50.00
- Locality
- Widowmaker mine, White Canyon, San Juan Co., Utah, United States
- Formula
- Cu2+3SO4(OH)4
- Size
- 6 x 8 x 2.5 cm - Sm Cabinet
- Tagged
- copper
Green finely crystalline Antlerite with carbonatecyanotrichite on the backside.
- 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.
- Availability
- Sold
- Locality
- Nikolaevskiy mine, Dal'negorsk, Russia
- Formula
- FeAsS
- Size
- 8 x 4 x 5.5 cm - Sm Cabinet
- Tagged
- sulfide
Combination specimen with silvery Arsenopyrite crystals to 8mm, dull silvery Galena crystals and black striated Sphalerite.
