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xenocryst
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xenocryst

geology

Learn about this topic in these articles:

formation

  • temperature of Earth
    In igneous rock: Fabric

    …phenocrysts are referred to as xenocrysts, while the aggregates can be termed xenoliths. The size of phenocrysts is essentially independent of their abundance relative to the groundmass, and they range in external form from euhedral to anhedral. Most of them are best described as subhedral. Because the groundmass constituents span…

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