Formula: Ag3Pb6Sb11S24
Origin of name: for Paul Ramdohr, German mineralogist
Crystal system: monoclinic
Crystal class: 2/m
Twinning: lamellar
Unit cell:
Colour: gray-black
Diaphaneity: opaque
Luster: metallic
Habit: crystals long prismatic or thick lance-shaped, lamellar twinning
Hardness: about 3
Specific gravity: 5.44
Cleavage: none
Tenacity:
Streak: gray-black
Synonyms/varieties:
Comments:
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