General Information:
Chemical Formula:
Cu7Hg6
Composition:
(Molecular Weight = 1,648.36 gm)
Copper 26.99 % Cu
Mercury 73.01 % Hg
Empirical Formula:
Cu7Hg6
Environment:
Dimorph of belendorffite.
IMA Status:
Approved IMA 1980
Locality:
Krokhalin antimony deposit, Kolyma River, Russia.
Name Origin:
Named for the locality.
Physical Properties:
Color:
brownish black, black, or tin white.
Density:
13
Diaphaniety:
Opaque
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Tarnishes - Freshly fractured surfaces form a surface oxidation film,
Hardness:
4 - Fluorite
Luster:
Metallic
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