Formula: Cu5Te3
Origin of name: for Louis Weiss, owner of the Good Hope Mine, Colorado (USA) and discoverer of rickardite
Crystal system: Hexagonal
Crystal class: 6/m 2/m 2/m
Twinning:
Unit cell: a = 8.432, c = 21.69
Colour: Bluish-black, slowly tarnishes to black
Diaphaneity: Opaque
Luster: Metallic
Habit: Massive, compact
Hardness: 3
Specific gravity: 6.44
Cleavage: None
Tenacity: Uneven fracture
Streak: Black
Synonyms/varieties:
Comments:
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