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Kaolinite with Chalcocite

#50568

Kaolinite with Chalcocite

#50568
Availability
Sold
Size
12 x 7.5 x 2.5 cm - Cabinet 
Formula
Al2Si2O5(OH)4 (RRUFF)
Locality
Metcalf mine, Greenlee Co., Arizona, United States

Pure white porcelain-like mass in thick veins across steely grey Chalcocite.

Kaolinite

Formula
Al2Si2O5(OH)4 
Crystal System
Triclinic 
Crystal Habit
Earthy 
Cleavage
Perfect, None, None 
Luster
Earthy (Dull) 
Color
white, brownish white, grayish white, yellowish white, grayish green 
Streak
white 
Class
Triclinic - Pedial 
Fracture
Earthy 
Hardness
1.5-2 

Data courtesy of Webmineral.

Collection
Robert J. Waidler Collection
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