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1 item @ $25.00  

Cosalite with Pyrite & Fluorite

#36660

Cosalite with Pyrite & Fluorite

#36660
Availability
Sold
Size
6 x 5 x 2 cm - Sm Cabinet 
Formula
Pb2Bi2S5 (RRUFF)
Locality
Kara-Oba W deposit, Betpakdala Desert, Karagandy, Kazakhstan
Tagged
sulfide

An combination specimen of Mostly large cubic Pyrite crystals to 1cm and needle-like crytsals of Cosalite. Also in association is a large black Sphalerite crystals and micro octahedral crystals of purple Fluorite and Muscovite.

Cosalite

Formula
Pb2Bi2S5 
Crystal System
Orthorhombic 
Crystal Habit
Radial, Massive - Fibrous 
Cleavage
Good, None, None 
Luster
Metallic 
Color
gray, steel gray, silver white 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
2.5-3 

Data courtesy of Webmineral.

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