dunitic

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du·nite

(do͞o′nīt′, dŭn′īt′)

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·nit′ic (do͞o-nĭt′īk, də-) 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.

dunitic

(dəˈnɪtɪk)

adj

relating to dunite

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

References in periodicals archive ?

The population is represented mainly by lherzolitic-harzburgitic (dunitic) compositions, mostly with a 0.55-0.63 range of (Si[O.sub.2] + [Al.sub.2][O.sub.3])/(MgO + Fe[O.sub.t]) molar ratio.

Magmatism in the Asuncion-Sapucai-Villarrica Graben (Eastern Paraguay) revisited: petrological, geophysical, geochemical, and geodynamic inferences

They occur in dunitic peridotite of the Chukotat group, 'sandwiched' between gabbros of the Watts and Povungnituk groups.

Raglan - an Arctic achievement

The veiny orebodies are irregular in form and structure, with much faulting and folding, although a feature common to all of them is their sharp cut-off from the surrounding dunitic rocks.