Formula: PtCu
Origin of name: After locality; Hong district, China
Crystal system: Hexagonal
Crystal class: 32
Twinning:
Unit cell:
Colour: Bronze
Diaphaneity: Opaque
Luster: Metallic
Habit: Granular, irregular to massive; dendritic aggregates; tarnished plates
Hardness: 4
Specific gravity: 15.6
Cleavage: None
Tenacity:
Streak: black
Synonyms/varieties:
Comments:
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