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dunite

   Also found in: Encyclopedia, Wikipedia 0.03 sec.
du·nite  (dnt, dnt)
n.
A dense igneous rock that consists mainly of olivine and is a source of magnesium.

[After Mount Dun in northern South Island, New Zealand.]

du·nitic (d-ntk, d-) adj.

dunite [ˈdʌnaɪt]
n
(Earth Sciences / Geological Science) an ultrabasic igneous rock consisting mainly of olivine
[named after Dun Mountain, a mountain in New Zealand where it is abundant]

dunite  (dnt, dnt)
A coarse-grained igneous rock that consists mainly of olivine.


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? Mentioned in ? References in periodicals archive
 
Olivine occurs in an ultra-basic igneous rock called dunite.
The alluvial deposits on Dime Creek are composed of mostly volcanic andesite and basalt sand and gravel with occasional cobbles of intrusive olivine dunite.
E[acute accent]Mooihoek Platinum Pipe Deposit contains the remnants of a platinum-rich dunite pipe of which platinum makes up 97.
 
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