Formula: Cu3Al4(PO4)3 (OH)9 .4H2O
Origin of name: Named for Emiliano Zapata (1879-1919), hero of the Mexican Revolution.
Crystal system: Tetragonal
Crystal class: unknown
Twinning:
Unit cell: a = 15.22, c = 11.52
Colour: Pale blue
Diaphaneity: translucent
Luster:
Habit: Massive, poorly crystalline cavity fillings
Hardness: 1.5
Specific gravity: 3.02
Cleavage: 1; {001} good
Tenacity: Sectile
Streak: Pale blue
Synonyms/varieties:
Comments:
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