gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1967.036.279.08 A Garnet Peridotite and a Garnet-Amphibole Pyroxenite from South Harris, Outer Hebrides, and Their Bearing on the South Harris Eclogite Facies Status Livingstone A. B.Sc., Ph.D. Institute of Geological Sciences, Gray's Inn Rd., London W.C.1. 9 1967 36 279 380 388 6 2 1967 Copyright © 1967, The Mineralogical Society 1967 Summary

A garnet-olivine metaperidotite and a garnet-amphibole pyroxenite are described. Chemical analyses are presented for six rocks and optical properties and chemical analyses are tabulated for clinopyroxene, almandine-pyrope garnet, and hastingsitie amphibole from the garnet-amphibole pyroxenite. A possible origin for the garnet peridotite and chemically similar granulite facies ultramafic rocks is suggested. The eclogite facies in South Harris is reinstated in the light of the data presented.