Formula: (Cd,Pb)Bi2S4
Origin of name: For the russian name of its type locality, Kudriavy (Kudryaviy) volcano, Iturup island, Kuril islands, Maritime province, Sakhalinskaya Oblast', Far-Eastern Region, Russia
Crystal system: Monoclinic
Crystal class:
Twinning:
Unit cell:
Colour: Dark reddish gray
Diaphaneity:
Luster: Metallic
Habit:
Hardness: 3.5
Specific gravity: 6.58
Cleavage: None
Tenacity:
Streak: Black
Synonyms/varieties:
Comments:
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