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Columbite-(Fe) with Albite

#64357
Columbite-(Fe) from Black Mountain pegmatite, Rumford, Oxford Co., Maine, United States - 64357
Columbite-(Fe) from Black Mountain pegmatite, Rumford, Oxford Co., Maine, United States - 64357

Columbite-(Fe) with Albite

#64357
Availability
Available
Price
$30.00
Size
4 x 3.5 x 2 cm - Miniature 
Formula
Fe2+Nb2O6 (RRUFF)
Locality
Black Mountain pegmatite, Rumford, Oxford Co., Maine, United States
Tagged
pegmatite mineral

Bladed black crytals of Columbite in Albite.

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.

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