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Clinoclase

#22668
SOLD
Clinoclase from Majuba Hill mine, Pershing Co., Nevada, United States - 22668
Clinoclase from Majuba Hill mine, Pershing Co., Nevada, United States - 22668

Clinoclase

#22668
Availability
Sold
Size
7 x 6.5 x 4 cm - Sm Cabinet 
Formula
Cu3AsO4(OH)3 (RRUFF)
Locality
Majuba Hill mine, Pershing Co., Nevada, United States
Tagged
arsenate

Deep blue fine crystalline coating of Clinoclase.

Clinoclase

Formula
Cu3AsO4(OH)3 
Crystal System
Monoclinic 
Crystal Habit
Crystals rare, typically needlelike, tabular, as rosettes and radial fibrous spherical aggregates, as crusts and coatings. 
Cleavage
perfect 
Luster
Vitreous, pearly on cleavages 
Color
Dark greenish blue to greenish black; in transmitted light, blue-green. 
Streak
Bluish green 
Geological Setting
A rare secondary mineral in the oxidized zone of some arsenic-rich hydrothermal base-metal deposits. 
Class
2/m - Prismatic 
Fracture
Uneven 
Hardness
2.5 - 3 

Data courtesy of Webmineral.

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