Formula: Cu8(Fe,Zn)3Sn2S12
Origin of name: from similar mineral stannite
Crystal system: Orthorhombic
Crystal class: 222
Twinning:
Unit cell: a = 10.76, b = 5.4, c = 16.09
Colour: Brass-brown
Diaphaneity: Opaque
Luster: Metallic
Habit: Massive, in veinlets to 1 mm
Hardness: about 4
Specific gravity: 4.29
Cleavage: None
Tenacity: Conchoidal to uneven fracture
Streak: Dark brown-gray
Synonyms/varieties:
Comments:
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