gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1971.038.295.19 Short Communications A Preliminary Note on Eucolite from Oldoinyo Lengai, Tanzania Dawson J. B. Department of Geology University of St. Andrews St. Andrews, Fife, Scotland 9 1971 38 295 385 385 2 7 1970 Copyright © 1971, The Mineralogical Society 1971