Selwynite, NaK,(Be,Al)Zr2(PO4)4.2H2O, a new gainesite- like mineral from Wycheproof, Victoria, Australia

W. D. Birch, A. Pring, E. E. Foord

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17 Citations (Scopus)


Selwynite is a new alkali beryllium zirconium phosphate hydrate from a pegmatite vein in Devonian granite at Wycheproof. The mineral occurs as irregular infillings that consist of intergrowths of indistinct radiating crystals and as granular aggregates filling cavities up to 8 mm across in the quartz - orthoclase - albite - muscovite - schorl-bearing pegmatite. Accompanying minerals include two other Zr-bearing phosphates, kosnarite and the new species wycheproofite, as well as wardite, eosphorite, cyrilovite, leucophosphite, rockbridgeite, a kidwellite-like mineral, saleeite and montmorillonite. The physical, optical and crystallographic properties of selwynite are described. -from Authors

Original languageEnglish
Pages (from-to)55-58
Number of pages4
JournalCanadian Mineralogist
Issue number1
Publication statusPublished - 1 Jan 1995
Externally publishedYes


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