gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1969.037.285.15 Study of Minerals from the Pegmatites of the Nellore Mica-Belt, Andhra Pradesh, India Part II. Muscovite Babu V. R. R. M. Department of Geology, Andhra University, Waltair 3 1969 37 285 140 143 28 12 1967 5 8 1968 Copyright © 1969, The Mineralogical Society 1969 Summary

The muscovites are 2M1 polymorph type; minimum temperature of crystallization of 435 °C is obtained from the molecular percentage of paragonite in muscovite.