Formula: Cu6As4S9
Origin of name: for R. von Sinner, Swiss museum official
Crystal system: triclinic
Crystal class: 1
Twinning:
Unit cell:
Colour: steel-gray
Diaphaneity: opaque
Luster: metallic
Habit: one crystal known, equant, highly twinned
Hardness: 4
Specific gravity: 5.2
Cleavage: none
Tenacity:
Streak: gray-black
Synonyms/varieties:
Comments:
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