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dolomite

dolomite definition

do·lo·mite (dō′lə mīt′, däl′ə-)

noun

a light-colored, semihard, rhombohedral mineral, calcium magnesium carbonate, CaMg(CO), with a glassy luster and perfect cleavage, used in making cement, chemicals, etc.
a light-colored sedimentary rock consisting mainly of dolomite and calcite, used as a building stone

Etymology: after Déodat de Dolomieu (1750-1801), Fr geologist

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