Formula: Ni5-xAs2
Origin of name: for Jean Orcel, French mineralogist
Crystal system: hexagonal
Crystal class: 6mm
Twinning:
Unit cell:
Colour: rose-bronze, pinkish bronze
Diaphaneity: opaque
Luster: metallic
Habit: massive, lamellar
Hardness: 6.5
Specific gravity:
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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