General Information:
Chemical Formula:
Hg3S2Cl2
Composition:
(Molecular Weight = 736.81 gm)
Mercury 81.67 % Hg
Sulfur 8.70 % S
Chlorine 9.62 % Cl
Empirical Formula:
Hg3S2Cl2
Environment:
In hydrothermally altered rhyolitic, tuffaceous rocks. An orthorhombic polymorph of corderoite.
IMA Status:
Approved IMA (Dana # Added)
Locality:
The McDermitt open pit mercury mine, about 10 km southwest of the town of McDermitt, Humboldt County, Nevada, USA.
Name Origin:
For Dr. Kenneth Junghwa Hsu (1929-), Professor Emeritus, Swiss Federal Institute of Technonogy, Zurich, Switzerland.
Physical Properties:
Color:
canary yellow.
Density:
6.76
Diaphaniety:
Transparent
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Acicular - Occurs as needle-like crystals.,
Hardness:
2-3 - Gypsum-Calcite
Luminescence:
Fluorescent, Short UV=orange red.
Luster:
Vitreous (Glassy)
Streak:
canary yellow
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