Formula: Pb2Cu2Bi4S9
Origin of name: Locality; Gladhammar, Sweden
Crystal system: Orthorhmbic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Steel-gray with red tint
Diaphaneity: Opaque
Luster: Metallic
Habit: Crystals short prismatic to acicular, faces curved, no terminal faces
Hardness: 3 to4
Specific gravity: 6.73
Cleavage: 1; {010} poor
Tenacity:
Streak: Black
Synonyms/varieties:
Comments:
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