gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1983.047.343.09 The Distribution of Lithium in Some Cornish Minerals: Ion Microprobe Measurements Wilson G. C. Wilson * Long J. V. P. NERC Ion Probe Unit, Department of Earth Sciences, Bullard Laboratories, Cambridge CB3 0EZ

Present address: Isotrace Laboratory, University of Toronto, Toronto, Canada M5S 1A7.

 6 1983 47 343 191 199 7 9 1981 10 9 1982 Copyright © 1983, The Mineralogical Society 1983 Abstract

Ion microprobe analyses of Li are presented for minerals of the Variscan granites and related rocks of west Cornwall. Together with electron microprobe data these provide insight into the behaviour of Li during the protracted late- and post-magmatic history of the granites. The role of the Mg-Fe tourmaline series is emphasized in this exploratory study.