General Information:
Chemical Formula:
Cu6As
Composition:
(Molecular Weight = 456.20 gm)
Copper 83.58 % Cu
Arsenic 16.42 % As
Empirical Formula:
Cu6As
Environment:
Hydrothermal deposits associated with other copper arsenides.
Locality:
TL: Chile, Algodones silver mn, Coquimbo
Name Origin:
Named for the locality.
Physical Properties:
Cleavage:
None
Color:
gray, silver white, steel gray, or tarnishes dull bronze.
Density:
8.38 - 8.72, Average = 8.55
Diaphaniety:
Opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Tarnishes - Freshly fractured surfaces form a surface oxidation film,
Hardness:
4 - Fluorite
Luminescence:
Non-fluorescent.
Luster:
Metallic
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