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A soft, fine-grained mineral (hydrated magnesium silicate). Used to impart a soapy texture to dry mixtures. (ceramics) Hydrated magnesium silicate; a glaze ingredient but also used in whiteware bodies in place of clay; has clay- like properties but lacks real plasticity. Talc bodies were developed in ancient Egypt and then revived in the early 1900s on the West Coast for commercial low-temperature bodies; fast-firing, has low thermal shock, fires very white.


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