tholeiite


tho·lei·ite

noun \ˈtō-lə-ˌīt, ˈthō-\

Definition of THOLEIITE

:  a basaltic rock that is rich in aluminum and low in potassium, is found typically in the ocean floor, and is probably derived from the earth's mantle
tho·lei·it·ic \ˌtō-lə-ˈi-tik, ˌthō-\ adjective

Origin of THOLEIITE

German Tholeiit, from Tholey, village in Saarland, Germany + German -it -ite
First Known Use: 1866

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