Formula: NaCuFe2(VO4)3
Origin of name: For Howard Evans, American geologist
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Black
Diaphaneity: Opaque
Luster: Metallic
Habit: Tabular crystals to 80 µm
Hardness:
Specific gravity: 3.81
Cleavage: None
Tenacity:
Streak: Red-brown
Synonyms/varieties:
Comments:
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