gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1977.041.320.40 K.A.Rodgers et al.: Motukoreaite Motukoreaite, A New Mineral Occurring as Beach-Rock Cement at Auckland, New Zealand Rodgers K. A. Department of Geology, University of Auckland, Auckland, Naw Zealand C. S. Nelson Department of Earth Sciences, University of Waikato, Hamilton, New Zealand Davis R. J. Chisholm J. E. Department of Mineralogy, British Museum (Natural History), London, England 12 1977 41 320 M21 M23 Copyright © 1977, The Mineralogical Society 1977