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Figure F15. Photomicrographs of calcareous silty clay with quartz (right large grain); glauconite of various sizes from fine silt to fine sand and some opaque minerals (Sample 313-M0029A-162R-1, 105 cm; Unit IID). Calcite grains matrix is much scattered. Photos are 0.7 mm (700 µm) in width. Plane-polarized light.

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