gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1963.033.260.01 The Identity of Almeriïte with Natroalunite Hoyos de Castro A. University of Madrid, Spain Alías L. J. Ph.D. Zaidin Exp. Station, C.S.I.C. Granada, Spain 3 1963 33 260 353 357 Copyright © 1963, The Mineralogical Society 1963 Summary

Two specimens of almeriïte from the type locality have been examined by chemical analysis, d.t.a., and X-ray powder photography and shown to be identical with natroalunite. A little illite and kaolinite are present as impurities. X-ray powder data for natroalunite are presented.