- Petrology. a variety of micaceous peridotite, low in silica content and high in magnesium content, in which diamonds are formed.
Origin of kimberlite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for kimberlite
The diamonds at Kimberley are found in a blue earth, technically known as kimberlite and commonly called "blue ground."An African Adventure
Isaac F. Marcosson
"We placed the instruments without difficulty," Balgos began—and Connel's eye caught sight of the kimberlite samples on the table.The Flaming Mountain
Harold Leland Goodwin
- an intrusive igneous rock generated at great depth in the earth's mantle and consisting largely of olivine and phlogopite. It often contains diamonds
C19: from Kimberley + -ite 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A type of peridotite consisting of a fine-grained matrix of calcite and olivine and containing phenocrysts of olivine, garnet, and sometimes diamonds. Kimberlites are found in long, vertical volcanic pipes, especially in South Africa.
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