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0 item @ $0.00  

Columbite-(Fe) to Tantalite-(Fe)

#PD50922

Columbite-(Fe) to Tantalite-(Fe)

#PD50922
Availability
Sold
Size
1.1 x 1.0 x 0.7 cm - Thumbnail 
Formula
Fe2+Nb2O6 (RRUFF)
Locality
Harding mine, Taos Co., New Mexico, United States
Tagged
ore mineral

A small but nice single crystal of Columbite-Tantalite. It could be of the Manganese nomenclature also. My desktop SEM is broke.

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

Data courtesy of Webmineral.

Collection
Don Phillips Collection

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