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1 item @ $25.00   30:00
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Olmsteadite

#59186
SOLD
Olmsteadite from White Cap mine, Pennington Co., South Dakota, United States - 59186
Olmsteadite from White Cap mine, Pennington Co., South Dakota, United States - 59186

Olmsteadite

#59186
Availability
Sold
Size
0.2 x 0.1 x 0.1 cm - Thumbnail 
Formula
KFe2+2NbO2(PO4)2·2H2O (RRUFF)
Locality
White Cap mine, Pennington Co., South Dakota, United States

A 1mm deep red prismatic crystal of Olmsteadite. Extremely Rare.

Olmsteadite

Formula
KFe2+2NbO2(PO4)2·2H2O 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic 
Cleavage
Good, Good, None 
Luster
Subadamantine 
Color
brown, reddish brown, black 
Streak
olive green 
Class
Orthorhombic - Pyramidal 
Fracture
Brittle 
Hardness
4 

Data courtesy of Webmineral.

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