Formula: (Ta,Nb)C
Origin of name: for its compositions, tantalum and carbon
Crystal system: Cubic/Isometric, may be metamict
Crystal class: 4/m 3 2/m
Twinning:
Unit cell:
Colour: Yellow gray, bronze
Diaphaneity: Opaque
Luster: Submetallic
Habit: Small grains
Hardness: 5.5-6
Specific gravity: 14.5
Cleavage:
Tenacity: Brittle, subconchoidal fracture
Streak:
Synonyms/varieties:
Comments:
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