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Clinoclase w/ Strasimirite on Cornwallite & Cornubite

#17056
SOLD
Clinoclase from Majuba Hill mine, Pershing Co., Nevada, United States - 17056
Clinoclase from Majuba Hill mine, Pershing Co., Nevada, United States - 17056

Clinoclase w/ Strasimirite on Cornwallite & Cornubite

#17056
Availability
Sold
Size
5.5 x 6 x 3.5 cm - Sm Cabinet 
Formula
Cu3AsO4(OH)3 (RRUFF)
Locality
Majuba Hill mine, Pershing Co., Nevada, United States
Tagged
arsenate

Clusters of curved deep-blue Clinoclase crystals to 2mm with pale green felty Strashimirite on a botryoidal coating of darker green Cornwallite and lighter green Cornubite.

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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