• The Quartz Page: Inclusions

    Apr 25, 2011· The image shows black inclusions of mica and clay concentrated at the tips of the crystals. The clay is gray, but just as it g

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  • Feldspar - Uses | Britannica

    Feldspar - Feldspar - Uses: Feldspars are used widely in the glass and ceramics industries. Alkali feldspars are more commonly used commercially than plagioc

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  • PRESSURE-TEMPERATURE CONDITIONS

    Locally, garnet was probably produced by this reaction. Textural observations support a final growth of cordierite, K-feldspar, and andalusite, probably repr

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