Formula: (Cu,Zn)(Cr,Sb)2S4
Origin of name: For N. Florensov, Ukrainian geologist
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Black
Diaphaneity:
Luster: Adamantine to metallic
Habit: Grains 50-60µm up to 150x200µm
Hardness: 5
Specific gravity:
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Forms continuous solid solution with kalininite, strongly magnetic, insoluble in HCl
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