General Information:
Chemical Formula:
Cu2HgSnS4
Composition:
(Molecular Weight = 574.66 gm)
Copper 22.12 % Cu
Tin 20.66 % Sn
Mercury 34.91 % Hg
Sulfur 22.32 % S
Empirical Formula:
Cu2HgSnS4
Environment:
In veins cutting carboniferous black schists and limestones in a mercury deposit. The mercury dominant analog of cernyite and stannite.
IMA Status:
Approved IMA
Locality:
Khaidarkan Hg deposit, about 60 km south of Fergana, Kirgizia.
Name Origin:
For A. C. Velikyi (1913-1970), a well known investigator of the ore deposits of Central Asia.
Physical Properties:
Cleavage:
None
Color:
gray, greenish gray, or light gray.
Density:
5.45
Diaphaniety:
Opaque
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., ,
Hardness:
4 - Fluorite
Luster:
Metallic
Streak:
gray
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