Formula: Cu2(Fe,Zn)SnS4
Origin of name: From ferrous iron (Fe2+) and kesterite
Crystal system: Tetragonal
Crystal class: -4
Twinning:
Unit cell:
Colour: Steel-grey
Diaphaneity:
Luster: Metallic
Habit:
Hardness: 4
Specific gravity:
Cleavage: 2; {110} distinct, {001} parting
Tenacity:
Streak: Black
Synonyms/varieties:
Comments: Iron analogue of kesterite; dimorphous with stannite
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