Formula: Cu3SbS4
Origin of name: For locality; Sierra de Famatina, Argentine
Crystal system: Tetragonal
Crystal class: -42m
Twinning:
Unit cell:
Colour: Deep pinkish brown with grayish tinge
Diaphaneity: Opaque
Luster: Dull metallic
Habit: Crystals distinct equant usually with faces curved and etched; massive, fine-grained or coarse-grained
Hardness: 3.5
Specific gravity: 4.64
Cleavage: 2; {101} good, {100} distinct
Tenacity:
Streak: Black
Synonyms/varieties:
Comments:
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