Formula: (Pb,Ag)4Sn4FeSb2S15
Origin of name: For the Incas, first miners of mineral
Crystal system: Monoclinic
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Grayish white
Diaphaneity:
Luster:
Habit: Lamellar, microscopic
Hardness: 1
Specific gravity:
Cleavage: 1; {100} excellent
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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