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• <br />u <br />n <br />U <br />The material passed through all sieves and collected in the <br />catching pan. <br />The 70 size sieve = 0.0083 inch mesh openings <br />Thus, the sandstone consists <br />crystals, feldspars, micas, and <br />material. <br />of very fine grained quartz <br />contains a high percent of clay <br />11 <br />