dol·o·mite 
(dōlə-mīt′, dŏlə-)
(dōlə-mīt′, dŏlə-)n.
1. A white or light-colored mineral, essentially CaMg(CO3)2, used in fertilizer, as a furnace refractory, and as a construction and ceramic material.
2. A magnesia-rich sedimentary rock resembling limestone.
[French, after Déodat de Dolomieu (1750-1801), French geologist.]
dol′o·mitic (-mĭtĭk) adj.
dol′o·mit′i·zation (-mĭt′ĭ-zāshən) n.
dolo·mit·ize′ (-mĭ-tīz′) v.