Again, the lack of zircon xenocrysts in this sample does not allow discrimination between these alternatives. |
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Hence, moissanites in kimberlites represent xenocrysts, the kimberlites sampling cold and reduced parts of lithospheric mantle keels. |
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On the western side of the mesa, black hornblende xenocrysts several centimeters in size are also found in a scoriaceous, agglomeratic portion of the lava flow. |
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We interpret these grains as xenocrysts from an older source terrain from which the granitic protolith of sample MS 3 may have been derived by anatectic melting. |
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Xenoliths and xenocrysts provide important information about the composition of the otherwise inaccessible mantle. |
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Kimberlites contain, in addition to diamond xenocrysts, fragments of lherzolites of varying composition. |
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No distinction of potential xenocrysts was made. |
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The presence of anomalously large plagioclase crystals, which may be xenocrysts, is the main reason for the success of those sites while other sites are not. |
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