Formula: Ca2B(AsO4)(OH)4
Origin of name: For Lazard Cahn, American collector
Crystal class: -4
Twinning: Common on {110}, often cruciform
Unit cell: a = 7.095 Ǻ, c = 6.190 Ǻ
Colour: Colourless to white
Diaphaneity:
Habit: Crystals pseudo-tetrahedral
Hardness: 3
Specific gravity: 3.156
Cleavage: 1; {110} perfect
Synonyms/varieties:
Comments:
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