Phosphuranylite

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	Puy1
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	2345

Phosphuranylite is a uranyl phosphate mineral with formula KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄·8(H₂O).³⁴⁵

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