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residual clay |
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residual clay [rə′zij·ə·wəl ′klā] (geology) Very finely divided clay material formed in place by weathering of rock. Also known as primary clay. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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One caveat pertains to works that may subsequently be dated using thermoluminescence (TL): ceramics and metals with residual clay investment material must be sampled for TL dating prior to exposure to X-rays, as the radiation interferes with the results. High residual clay is detrimental with any liquid binder systems; 90-92 GE brightness white water washed kaolinites from residual clay developed in quartz porphyry zones will be ceramic tested and designated Sacajewea 185 Kaolin. |
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