General Information:
Chemical Formula:
HgS
Composition:
(Molecular Weight = 232.66 gm)
Mercury 86.22 % Hg
Sulfur 13.78 % S
Empirical Formula:
HgS
Locality:
Redington mine, Knoxville, Hapa Co., California.
Name Origin:
From the Greek meta and cinnabar (similar chemical composition and association with cinnabar).
Physical Properties:
Cleavage:
None
Color:
black or gray black.
Density:
7.7 - 7.8, Average = 7.75
Diaphaniety:
Opaque
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., Encrustations - Forms crust-like aggregates on matrix.,
Hardness:
3 - Calcite
Luminescence:
None.
Luster:
Metallic
Streak:
black
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