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Webster 1913 Edition

Noun.

[Named after

Gay-Lussac

, the French chemist.]

(Min.)

A yellowish white, translucent mineral, consisting of the carbonates of lime and soda, with water.

gaylussite ‎(uncountable)

(mineralogy) A saline evaporite, consisting of a mixed sodium and calcium carbonate, with the chemical formula Na₂Ca(C O₃)₂·5H₂O.