Pharmacoalumite
Pharmacoalumite is an IMA-recognized mineral species in the arsenate class, with the chemical formula KAl₄(AsO₄)₃(OH)₄·6.5H₂O.
It crystallizes in the cubic crystal system (space group P-43m). It is a member of the Pharmacosiderite structural group.
Key properties: specific gravity 2.676.
IMA symbol Pal, IMA status: approved, named in 1980.
A secondary mineral with other oxidized arsenates on a museum specimen.
It is found associated with Ceruleite, olivenite, schlossmacherite, mansfieldite, quartz.
As the aluminum (alum) end-member in the pharmacosiderite supergroup.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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