General Information:
Chemical Formula:
Hg3S2ClI
Composition:
(Molecular Weight = 828.26 gm)
Mercury 72.65 % Hg
Sulfur 7.74 % S
Iodine 15.32 % I
Chlorine 4.28 % Cl
Empirical Formula:
Hg3S2ClI
Environment:
Secondary Hg mineral.
IMA Status:
Approved IMA
Locality:
McDermitt mercury mine, Humboldt County, Nevada, USA.
Name Origin:
Named for Arthur S. Radtke (1936-), geologist, U. S. Geological Survey.
Physical Properties:
Cleavage:
[010] Perfect, [001] Very Good, [100] Very Good
Color:
bright yellow orange or orange.
Density:
7
Diaphaniety:
Translucent to Opaque
Habits:
Microscopic Crystals - Crystals visible only with microscopes., ,
Hardness:
2-3 - Gypsum-Calcite
Luster:
Adamantine
Streak:
yellow orange
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