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kimberlite

[kim-ber-lahyt] /ˈkɪm bərˌlaɪt/
noun
1.
Petrology. a variety of micaceous peridotite, low in silica content and high in magnesium content, in which diamonds are formed.
Origin
1885-1890
1885-90; named after Kimberley, South Africa; see -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for kimberlite
  • The alluvial terraces are exhausted and the future lies in the underlying kimberlite rock.
  • In contrast to alluvial diamonds, there are kimberlite diamond deposits.
  • Because the kimberlite is much softer than the surrounding granite, there were deeper depressions in the areas with kimberlite.
  • Diamonds, for instance, are found in rocks known as kimberlite.
  • Exploration for additional kimberlite pipes continues.
British Dictionary definitions for kimberlite

kimberlite

/ˈkɪmbəˌlaɪt/
noun
1.
an intrusive igneous rock generated at great depth in the earth's mantle and consisting largely of olivine and phlogopite. It often contains diamonds
Word Origin
C19: from Kimberley + -ite1
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
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kimberlite in Science
kimberlite
  (kĭm'bər-līt')   
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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