Formula: (Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12
Origin of name: After locality; Gal-Khaya, Russia
Crystal system: Cubic
Crystal class: -43m
Twinning:
Unit cell: a = 10.37 Ǻ
Colour: Dark orange-red
Diaphaneity:
Luster: Vitreous to adamantine
Habit: Crystals euhedral; aggregates
Hardness: 3
Specific gravity: 5.4
Cleavage: None
Tenacity: Conchoidal to uneven; brittle
Streak: Orange-yellow
Synonyms/varieties:
Comments:
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