Formula: Hg6Cu7
Origin of name: For Klaus Belendorff, German mineral collector
Crystal system: Hexagonal
Crystal class: 3m
Twinning:
Unit cell:
Colour: Silvery
Diaphaneity:
Luster: Metallic
Habit: A globular nodule, 6.1 grams
Hardness: 1.5 to 3.5
Specific gravity: 13.2
Cleavage: None
Tenacity:
Streak: Silvery
Synonyms/varieties:
Comments: Dimorphous with kolymite; tarnishes yellow to blackish brown
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