Formula: [Ag5(Fe,Pb)Bi7]13(Sb,Bi)2S17
Origin of name: For Yury Borodaev, Russian mineralogist
Crystal system: Monoclinic
Crystal class: m or 2/m
Twinning:
Unit cell:
Colour: White
Diaphaneity:
Luster:
Habit: Elongate platy crystals or irregular grains to 0.5 x 1/2 mm
Hardness: 3
Specific gravity:
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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