orthoclase ceramic feldspar

orthoclase ceramic feldspar

[ôr′thəklās]

Etymology: Gk, orthos, straight, klassis, breaking, keramikos, pottery

a plentiful clay in the solid crust of the earth, used to fill space and give body to fused dental porcelain. Compare feldspar.

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feldspar (feld´spär),

n a crystalline mineral of aluminum silicate with po-tassium, sodium, barium, or calcium– NaAlSi₃O₈ or KA_lSi₃O₈. Feldspar melts over a range of 1,100°F to 2,000°F (593.5°C to 1093.5°C). An important constituent of dental porcelain.

feldspar, orthoclase ceramic,

n a clay found in large quantity in the solid crust of the earth. It acts as a filler and imparts body to the fused dental porcelain.