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It was immediately evident that it was not suspending well, it settled to the bottom quickly and felt fairly sandy. This is not a good sign since it will make slurry processing difficult (because the settling material will immediately clog up the sieve). That being said, a small amount of added bentonite would help to suspend it and make sieving easier. There were a few rocks that were cm-sized. Floating organic material is minimal.
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Evaluating a clay's suitability for use in pottery
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