Formula: CaAl2(PO4)2(OH)2 . H2O
Origin of name: Locality; Gatumba, Rwanda
Crystal system: Monoclinic
Crystal class: unknown
Twinning:
Unit cell:
Colour: White
Diaphaneity:
Luster: Pearly
Habit: Sheaves and rosette-like aggregates, radial fibrous structure
Hardness: <5
Specific gravity: 2.92
Cleavage: 1; Parallel to elongation
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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