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Karibibite with Schneiderhohnite, Leiteite

#35147

Karibibite with Schneiderhohnite, Leiteite

#35147
Availability
Sold
Size
0.8 x 0.7 x 0.6 cm - Thumbnail 
Formula
Fe3+2As3+4O9 (RRUFF)
Locality
Tsumeb mine, Tsumeb, Namibia
Tagged
arsenate

Excellent sharp black crystals of Schneiderhohnite with orange fibrous Karibibite and platy Leiteite. This is an interesting specimen since Karibibite has not been reported or at least published from Tsumeb eventhough this specimen originated from Georg Gebhard. The RRUFF website has confirmed its identity at Tsumeb. However, the association of Karibibite with Schneiderhohnite is typical and has been recorded from Minas Gerais, Bou Azzer and the White Elephant mine in South Dakota. The label plus the occurence of Leiteite with this specimen validates its locality as Tsumeb. Ludlockite is a possibility given the chemistry and its known association with Leiteite at Tsumeb, but this does not look like Ludlockite. It is highly likely that Karibibite has been overlooked at Tsumeb and mistaken for Ludlockite. Gebhard labels this as coming from the third oxidation zone.

A copy of Gebhard's label is provided and can be seen in the provenance tab. The original was sold with another specimen I had previously.

Karibibite

Formula
Fe3+2As3+4O9 
Crystal System
Orthorhombic 
Crystal Habit
Fibrous 
Color
brownish yellow 
Streak
light yellow 
Class
Orthorhombic 
Hardness
1-2 

Data courtesy of Webmineral.

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