Formula: Ca2(PO4)(OH) . 2H2O
Origin of name: From Greek for equal and fracture
Crystal system: Monoclinic
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Colourless, white
Diaphaneity: Transparent to translucent
Luster: Vitreous, pearly on cleavage
Habit: Crystals prismatic, minute; cotton-like fibers
Hardness: 1.5
Specific gravity: 2.92
Cleavage: 1; {010} distinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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