Formula: Fe2(TeO3)3
Origin of name: For William Blake, American mineralogist
Crystal system: Unknown
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Dark brown to dark reddish brown
Diaphaneity:
Luster: Dull
Habit: Massive or microcrystalline crusts
Hardness: >2
Specific gravity: >3.1
Cleavage: None
Tenacity:
Streak: Yellowish brown
Synonyms/varieties:
Comments:
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