Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $30.00
- Locality
- Black Mountain pegmatite, Rumford, Oxford Co., Maine, United States
- Formula
- Fe2+Nb2O6
- Size
- 4 x 3.5 x 2 cm - Miniature
- Tagged
- pegmatite mineral
Bladed black crytals of Columbite in Albite.
- Availability
- Available
- Price
- $45.00
- Locality
- Etta mine, Pennington Co., South Dakota, United States
- Formula
- Fe2+Nb2O6
- Size
- 8 x 4.5 x 4 cm - Sm Cabinet
- Tagged
- pegmatite mineral
Large chunk of Columbite-Tantalite showing no crystal faces. Famous US pegmatite.
- Availability
- Available
- Price
- $45.00
- Locality
- Etta mine, Pennington Co., South Dakota, United States
- Formula
- Fe2+Nb2O6
- Size
- 4 x 3 x 1.2 cm - Miniature
- Tagged
- pegmatite mineral
Tabular striated crystal with front and back and sides.
- Availability
- Available
- Price
- $35.00
- Locality
- Etta mine, Pennington Co., South Dakota, United States
- Formula
- Fe2+Nb2O6
- Size
- 3 x 2 x 0.6 cm - Thumbnail
- Tagged
- pegmatite mineral
Small, striated crystal showing faces front and back and top.
SOLD
- Availability
- Sold
- Locality
- Etta mine, Pennington Co., South Dakota, United States
- Formula
- Fe2+Nb2O6
- Size
- 8 x 7 x 5 cm - Sm Cabinet
- Tagged
- pegmatite mineral
Large chunk of Columbite-Tantalite with some striated faces.
- Availability
- Available
- Price
- $40.00
- Locality
- Etta mine, Pennington Co., South Dakota, United States
- Formula
- Fe2+Nb2O6
- Size
- 3.6 x 2.2 x 1 cm - Miniature
- Tagged
- pegmatite mineral
Tabular crystals with font and back faces and one side.
