Formula: Ba(UO2)6O4(OH)6 . 4H2O
Origin of name: For Balère Billiet, Belgian crystallographer
Crystal system: Orthorhombic
Crystal class: mm2
Twinning: Common on {110}
Unit cell: a = 14.22 Ǻ, b = 12.03 Ǻ, c = 15.02 Ǻ
Colour: Yellowish amber to yellowish brown
Diaphaneity:
Diaphaneity:
Luster: Adamantine
Habit: Crystals tabular
Hardness:
Specific gravity: 5.28
Cleavage: 3; {001} perfect, {110} and {010} imperfect
Tenacity:
Streak: Yellow
Synonyms/varieties:
Comments:
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