Phosphuranylite

Phosphuranylite is a uranyl phosphate mineral with formula KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄·8(H₂O).^[3][4][5]

Phosphuranylite
Phosphuranylite from South Alligator River, Northern Territory, Australia (10 mm field of view)
General
Category	Phosphate minerals
Formula	KCa(H3O)3(UO2)7(PO4)4O4·8(H2O)
IMA symbol	Puy[1]
Strunz classification	8.EC.10
Crystal system	Orthorhombic
Crystal class	Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Space group	Cmcm
Identification
Other characteristics	Radioactive
References	[2][3][4][5]

It was first described in 1879 by Frederick Augustus Genth, from an occurrence in the Flat Rock pegmatite in Mitchell County, North Carolina, US.^[4]