Formula: (Tl,Pb)23(Sb,As)91S147
Origin of name: For locality, Chabourneou Glacier, France
Crystal system: Triclinic
Crystal class: 1
Twinning:
Unit cell: a = 16.346 Å, b = 42.602 Å, c = 8.534 Å, α = 95.86°, β = 86.91°, g = 96.88°
Colour: Black
Diaphaneity: Opaque
Luster: Submetallic to greasy
Habit: Crystals, rare, smaller than 1 mm; intergrowths with pierrotite
Hardness :
Specific gravity: 5.10
Cleavage: None
Tenacity: Conchoidal fracture
Streak: Brown-red
Synonyms/varieties:
Comments:
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