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XENOLITHS AT THRELKELD, CUMBERLAND
Proceedings of the Yorkshire Geological Society, 1940In the years 1925–6 I did a good deal of field-work on the so-called microgranite of Threlkeld and St. John’s Vale, with the intention of making a complete petrographic investigation of these rock masses. Material was collected and a number of microscope slices were cut.
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Diamondiferous eclogite xenoliths in kimberlite
Lithos, 1970Abstract The physical properties of garnet in diamond-kyanite-eclogite and diamond-corundum-eclogite are presented for the first time, and are compared with garnet in six newly available diamond eclogites. Garnets from diamond-bearing eclogites do not constitute a separate subdivision, but plot in the compositional fields appropriate to their ...
P.C Rickwood, Morna Mathias
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Farmington Meteorite: Cristobalite Xenoliths and Blackening
Science, 1967The Farmington chondrite contains two small xenoliths of granular cristobalite, each surrounded by a thin reaction rim of diopsidic clinopyroxene. Similarities between the blackened structure and drusy cavities, characteristic of this meteorite, and those of an experimentally heat-treated chondrite suggest that Farmington was reheated rather than ...
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Diamonds, Xenoliths, and Exploration Techniques
1991Diamonds and ultramafic xenoliths found in lamproites represent samples of the mantle ocurring near, and overlying, the source rocks of these magmas. Despite their rarity, these samples contribute significantly to the economic and scientific importance of lamproites.
Roger H. Mitchell, Steven C. Bergman
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