Formula: (Na,Ca)2V6O16 . 3H2O
Origin of name: For W. Barnes, Canadian crystallographer
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 12.17 Ǻ, b = 3.60 Ǻ, c = 7.78 Ǻ, β = 95.0°
Colour: Dark red
Diaphaneity:
Luster:
Habit: Crystals microscopic, bladed to fibrous, aggregates or radiating clusters; velvety botryoidal coatings
Hardness:
Specific gravity: 3.15
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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