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0 item @ $0.00  

Goethite

#RW48552

Goethite

#RW48552
Availability
Sold
Size
14 x 11 x 6 cm - Cabinet 
Formula
FeO(OH) (RRUFF)
Locality
Mahoning-Hull-Rust mine, Hibbing, Mesabi Range, St. Louis Co., Minnesota, United States
Tagged
ore mineral

This is a large, heavy specimen and expect extra to ship beyond what the cart estimates. It is an impressive botryoidal or mammilary group of Goethite crystals. It is equally nice on each side and along the edges you can see the concentric, compact fibrous nature of the crystallization. Collected personally by Waidler during his time as a mining engineer in the iron mines of Minnesota.

Goethite

Formula
FeO(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Reniform, Radial 
Cleavage
Perfect, Distinct, None 
Luster
Adamantine - Silky 
Color
brown, reddish brown, yellowish brown, brownish yellow, ocher yellow 
Streak
yellowish brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Hackly 
Hardness
5-5.5 

Data courtesy of Webmineral.

Collection
Robert J. Waidler Collection
Mineralpedia
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On Dakota Matrix
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On Dakota Matrix
Other Available Goethite
WebMineral
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Mindat
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