A Garnet Peridotite and a Garnet-Amphibole Pyroxenite from South Harris, Outer Hebrides, and Their Bearing on the South Harris Eclogite Facies Status

A. Livingstone
Institute of Geological Sciences, Gray's Inn Rd., London W.C.1.

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.

Mineralogical Magazine; September 1967 v. 36; no. 279; p. 380-388; DOI: 10.1180/minmag.1967.036.279.08
© 1967, The Mineralogical Society
Mineralogical Society (www.minersoc.org)