gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1986.050.356.04 Petrology Eclogitic Amphibolites from the Grampian Moines Baker A. J. * Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR

Present address: Grant Institute of Geology, West Mains Road, Edinburgh EH9 3JW.

 6 1986 50 356 217 221 9 5 1985 26 11 1985 Copyright © 1986, The Mineralogical Society 1986 Abstract

Amphibolites from the Grampian Moines of Scotland contain clinopyroxene-plagioclase symplectites and plagioclase-hornblende coronas around garnet. The clinopyroxene-plagioclase symplectites are interpreted as former omphacites. It is inferred that an eclogitic garnetomphacite-quartz assemblage once existed, but has since undergone partial reaction to an amphibolite facies hornblende-plagioclase assemblage. An early high-pressure metamorphic event occurred in parts of the Moine.

 Keywords amphibolites eclogites symplectites coronas Moines Grampian Mountains