Formula: (Pb,Ag)11.8(As,Sb)17.6S36
Origin of name: For H. Baumhauer (1848-1926), German mineralogist and Professor at University of Fribourg, Switzerland
Crystal system: Monoclinic
Crystal class:
Twinning:
Unit cell: a = 44.74 Å, b= 8.477 Å, c = 7.91 Å, α = 90°, β = 93.37°, γ = 90°
Colour: Metallic steel gray; white in reflected light
Diaphaneity:
Luster: Metallic
Habit:
Hardness: 3
Specific gravity: 5.31
Cleavage:
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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