gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.1.216 The Curaçao Lava Formation: Samples of the Oldest and Most Primitive Magmas from the Galapagos Plume Hergt J. M. School of Earth Sciences, University of Melbourne, Parkville, VIC., Australia Storey M. Division of Geography and Geology, West London Institute, College of Brunel University, Middlesex, TW7 5DU, England Marriner G. Dept. Geology, Royal Holloway and Bedford New College, Egham, TW20 OEX, England Tarney J. Dept. Geology, University of Leicester, LE1 7RH 8 1994 58A 1 414 415 Copyright © 1994, The Mineralogical Society 1994