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0 item @ $0.00  

Brochantite

#RW51178

Brochantite

#RW51178
Availability
Sold
Size
5.5 x 3 x 1.5 cm - Sm Cabinet 
Formula
Cu4SO4(OH)6 (RRUFF)
Locality
Metcalf mine, Greenlee Co., Arizona, United States
Tagged
copper

Beautiful dark green and lustrous Brochantite crystals to 4mm.  Some of these crystals are in nice radial sprays as the photos show.  Excellent specimen.

Brochantite

Formula
Cu4SO4(OH)6 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Prismatic, Druse 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
green, emerald green, black 
Streak
pale green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 

Data courtesy of Webmineral.

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