Columbite-(Fe)
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Columbite-(Fe)
- Sold
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- Availability
- Sold
- Size
- 9.5 x 9 x 4 cm - Cabinet
- Formula
- Fe2+Nb2O6 (RRUFF)
- Locality
- Black Mountain pegmatite, Rumford, Oxford Co., Maine, United States
Black embedded crystal group of Columbite-Tantalite group. The exact end member/composition has not been determined and the ID of Columbite-(Fe) is assumed.
Columbite-(Fe)
- Formula
- Fe2+Nb2O6
- Crystal System
- Orthorhombic
- Crystal Habit
- Massive - Granular, Striated
- Cleavage
- Distinct, None, None
- Luster
- Sub Metallic
- Color
- black, brownish black
- Streak
- blackish brown
- Class
- Orthorhombic - Dipyramidal
- Fracture
- Sub Conchoidal
- Hardness
- 6
Data courtesy of Webmineral.
- Collection
- Phillips Collection
- Mineralpedia
- View Columbite-(Fe)
- On Dakota Matrix
- Previously Sold Columbite-(Fe)
- On Dakota Matrix
- Other Available Columbite-(Fe)
- WebMineral
- View Columbite-(Fe)
- Mindat
- View Columbite-(Fe)
