Formula: Bi7Te3
Origin of name: After locality; Hedley, British Columbia, Canada
Crystal system: Hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: Tin-white; tarnishes iron-black
Diaphaneity: Opaque
Luster: Metallic
Habit: Massive, lamellar; small plates
Hardness: 2
Specific gravity: 8.91
Cleavage: 1; {0001} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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