Formula: CuAs2
Origin of name: from Latin pax = peace
Crystal system: monoclinic, pseudo-orthorhombic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: light steel-gray, tarnishes to black
Diaphaneity: opaque
Luster: metallic
Habit: massive, lamellar
Hardness: 3.5 to 4
Specific gravity: about 5.3
Cleavage: 1; perfect
Tenacity:
Streak: black
Synonyms/varieties:
Comments:
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