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Figure F41. Nonvolcanic fragment types observed in smear slides. A–C. Sample 338-C0002J-5R-CC, 2 cm in XPL: (A) grain of polycrystalline quartz, (B) chert fragment, and (C) quartz-mica metamorphic lithic fragment with apparent foliation. D. Quartz-mica metamorphic lithic fragment lacking apparent foliation (Sample 338-C0002J-6R-1, 30 cm; XPL).

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