Formula: PbBi2Se2(Te,S)2
Origin of name: for Z. Pouba, Czech geologist
Crystal system: hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: white with creamy tint in reflected light
Diaphaneity:
Luster: metallic
Habit: crystals lath-like, subhedral to euhedral, to 80 micron
Hardness: 2.5 to 3
Specific gravity: 7.85
Cleavage: 1; distinct parallel to elongation
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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