dunite


du·nite

noun \ˈdü-ˌnīt, ˈdə-\

Definition of DUNITE

:  a granular igneous rock consisting chiefly of olivine
du·nit·ic \dü-ˈni-tik, ˌdə-\ adjective

Origin of DUNITE

Mt. Dun, New Zealand
First Known Use: circa 1868

dunite

noun    (Concise Encyclopedia)

Yellowish green to green igneous rock composed almost entirely of olivine. Chromite and magnetite also occur in dunite, as do spinel, ilmenite, pyrrhotite, and platinum in some cases. Dunites may be a source of chromium. Places of occurrence include Dun Mtn., New Zealand (the source of its name), South Africa, and Sweden.

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