General Information:
Chemical Formula:
As(S,Se)2
Composition:
(Molecular Weight = 162.50 gm)
Arsenic 46.11 % As
Selenium 24.30 % Se
Sulfur 29.60 % S
Empirical Formula:
AsS1.5Se0.5
Environment:
Sublimate of burning sulfide ores in a mine fire.
Locality:
United Verde Mine, Jerome, Arizona, USA.
Name Origin:
Named for the locality
Physical Properties:
Color:
cherry red, red, or black.
Streak:
reddish black
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