Formula: NaCa2Al2(PO4)2(F,OH)5 .2H2O
Origin of name: For Mr. Morineau, Mine director, France
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 9.454, b = 10.692, c = 5.444, β = 105.46°
Colour: Colourless, white, pale pink
Diaphaneity: Translucent
Luster: Vitreous to slightly oily
Habit: Crystals long prismatic or tabular, striated vertically; columnar, radial-fibrous or coarse crystalline
Hardness: 4 to 4.5
Specific gravity: 2.962
Cleavage: 2; {100} perfect, {001} imperfect
Tenacity: Brittle
Streak: White
Synonyms/varieties: Jezekite
Comments:
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