Formula: KAl4(AsO4)3(OH)4 . 6.5H2O
Origin of name: From aluminum and pharmacosiderite
Crystal system: Cubic
Crystal class: -43m
Unit cell: a = 7.745 Å
Colour: White
Diaphaneity: Transparent to translucent
Specific gravity: 2.68
Cleavage: None
Streak: White
Synonyms/varieties:
Comments: Al analogue of pharmacosiderite. Found with other oxidised arsenates on a museum specimen.
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