Formula: NiFe2O4
Origin of name: for T. Trevor, South African geologist
Crystal system: cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: black
Diaphaneity: opaque
Luster: metallic
Habit: crystals octahedral, distorted, massive
Hardness: 5
Specific gravity: 5.17
Cleavage: none
Tenacity:
Streak: black
Synonyms/varieties:
Comments:
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