Formula: PtSn
Origin of name: for Paul Niggli, Swiss geologist
Crystal system: hexagonal
Crystal class: 6/m 2/m 2/m
Twinning:
Unit cell:
Colour: silver-white
Diaphaneity: opaque
Luster: metallic
Habit: minute grains
Hardness: 3
Specific gravity: 13.44
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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