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Garnet and pyroxene compositions in some diamondiferous eclogites |
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| Authors: | Arch M Reid R W Brown J B Dawson G G Whitfield J C Siebert |
| Institution: | (1) Department of Geology, University of Cape Town, Rondebosch, South Africa;(2) Lockheed Electronics Company, Houston, Texas, USA;(3) Department of Geology, University of St. Andrews, St. Andrews, Scotland;(4) Phelps Dodge of Africa Ltd., Kenhardt, South Africa;(5) Cullinan Minerals Ltd., Olifantsfontein, South Africa |
| Abstract: | Analyses are reported for garnet and pyroxene from 17 eclogites that contain diamond. The garnets contain small but significant contents of Na, Ti and P and the pyroxenes contain traces of K. The diamond-bearing eclogites do not constitute a unique compositional group but show a range of mineral compositions consistent with a very high P-T environment. |
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