Formula: As(S,Se)2 (?)
Origin of name: Locality; Jerome, Arizona
Crystal system: Amorphous
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Black to red
Diaphaneity: Opaque
Luster:
Habit: Globular coatings
Hardness:
Specific gravity:
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: A doubtful mineral, no optical data
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