gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1979.043.328.10 Wolfeite and Barbosalite from Thackaringa, Australia Plimer I. R. Blucher I. D. University of New South Wales, P.O. Box 334, Broken Hill, NSW 2880, Australia 12 1979 43 328 505 507 8 2 1979 1 6 1979 Copyright © 1979, The Mineralogical Society 1979 Summary

Wolfeite (Fe,Mn)2PO4(OH) and barbosalite FeIIFeIII 2(PO4)2(OH)2 are the principal phases in phosphate pods from the core of a zoned altered granitic pegmatite at Thackaringa. Chemical analyses of the wolfeite show it to be Fe-rich and extends the triploiditewolfeite isomorphous series (Frondel, 1949) from ΣFe/Mn = 3·39 (this study) to greater than 100 (Clark and Couper, 1979).