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Arsenopyrite in Quartz

#AH54073

Arsenopyrite in Quartz

#AH54073
Availability
Sold
Size
7.5 x 6 x 6 cm - Sm Cabinet 
Formula
FeAsS (RRUFF)
Locality
Chatham Cobalt mine, Cobalt, Connecticut, United States
Tagged
sulfide

Quartz matrix with Arsenopyrite - no crystals. It is a famous old mine - see this page OLD COBALT MINE IN CHATHAM, CONN - (American Mineralogist). It was collected by Arnold Hampson in 1945.

Arsenopyrite

Formula
FeAsS 
Crystal System
Monoclinic 
Crystal Habit
Striated, Euhedral Crystals, Prismatic 
Cleavage
one distinct 
Luster
Metallic 
Color
tin white, light steel gray 
Streak
black 
Geological Setting
Widespread. Most commonly found in medium to high temperature veins.  
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
5.5 to 6 

Data courtesy of Webmineral.

Collection
Arnold G Hampson Collection

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