Formula: (Ta,Nb) BO4
Origin of name: Fro Jean Behier, mineralogist, Madagascar
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: Grayish pink
Diaphaneity:
Luster: Adamantine
Habit: Crystals octahedral
Hardness: 7 to 7.5
Specific gravity: 7.86
Cleavage: 2; {110} and {010} distinct
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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