kimberlite

kim ber lite |ˈkimbərˌlīt ˈkɪmbərlaɪt | ▶noun Geology a rare, blue-tinged, coarse-grained intrusive igneous rock sometimes containing diamonds, found esp. in South Africa and Siberia. Also called blue ground. ORIGIN late 19th cent.: from Kimberley + -ite 1 .

kimberlite

kimberlite |ˈkɪmbəlʌɪt | ▶noun [ mass noun ] Geology a rare, blue-tinged, coarse-grained intrusive igneous rock sometimes containing diamonds, found in South Africa and Siberia. Also called blue ground. ORIGIN late 19th cent.: from Kimberley + -ite 1 .