Formula: Cu12(Te,Sb,As)4S13
Origin of name: Locality; Goldfield, Nevada
Crystal system: Cubic
Crystal class: -43m
Twinning:
Unit cell:
Colour: Dark lead-gray
Diaphaneity: Opaque
Luster: Metallic
Habit: Massive, crusts
Hardness: 3 to 3.5
Specific gravity: 4.95
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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