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0 item @ $0.00  

Columbite-(Fe)

#PD37097

Columbite-(Fe)

#PD37097
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

Data courtesy of Webmineral.

Collection
Phillips Collection

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