kimberlite

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kim·ber·lite

 (kĭm′bər-līt′)
n.
A variety of peridotite forming pipes in which diamonds and garnets are often found.

[After Kimberley, a city in central South Africa where several kimberlite pipes mined for large diamonds are found.]

kim′ber·lit′ic (-lĭt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

kimberlite

(ˈkɪmbəˌlaɪt)
n
(Minerals) 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 + -ite1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.kimberlite - a rare type of peridotite that sometimes contains diamonds; found in South Africa and Siberia
peridotite - a dark coarse-grained igneous rock consisting principally of olivine
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The advanced-stage Kahuna diamond project in Nunavut hosts a high-grade, near surface inferred diamond resource and numerous kimberlite pipe targets.
The average grade is anticipated to increase for the remainder of the year, as the extraction of higher grade production ore from the Renard 3 kimberlite pipe ramps up, and with the development of the second underground mining horizon of Renard 2, also of higher average grade.
However, what was unexpected was the enormous size of this kimberlite pipe that was destined to become the world class Orapa diamond mine,' he reminisced.
"This has piqued our interest as to whether a very large kimberlite pipe or a series of pipes exists."
ALROSA unearthed the 179-carat rough diamond in 2015 at the Nyurbinskaya kimberlite pipe in the Republic of Sakha (Yakutia).
The Lahtojoki diamondiferous kimberlite pipe is situated in the Kuopio Kaavi region of Finland in a highly favourable location with excellent infrastructure including good road access and power distribution and local technical and logistics availability.
The company said Thursday it will develop the A21 kimberlite pipe of the project during a four-year expansion plan.
It seems unlikely that a diamond crystal or fragment could actually be destroyed during the emplacement of a kimberlite pipe, so the odds are that the other parts of the original Cullinan diamond still exist somewhere.
All three holes drilled recently have successfully extended dimensions of the Renard 2 kimberlite pipe at depth.
Approximately 250 tonnes of ore has to be mined from a kimberlite pipe to produce a one carat polished diamond of gem quality.