Formula: Ag2FeSnS4
Origin of name: For R. Hocart, French crystallographer
Crystal system: Tetragonal
Crystal class: -42m
Twinning:
Unit cell:
Colour: Brownish-gray (polished section)
Diaphaneity: Opaque
Luster:
Habit: Microscopic grains
Hardness: ~ 4
Specific gravity: 4.77
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Series with pirquitasite
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