peridotite

peridotite [per-i-doh-tahyt, puh-rid-uh-tahyt] ExamplesWord Origin noun

1. a coarsely granular igneous rock composed chiefly of olivine with an admixture of various other minerals.

Origin of peridotite From French, dating back to 1895–1900; see origin at peridot, -ite1 Related formsper·i·do·tit·ic [per-i-doh-tit-ik, puh-rid-uh-] /ˌpɛr ɪ doʊˈtɪt ɪk, pəˌrɪd ə-/, adjective Examples from the Web for peridotite Historical Examples of peridotite

Chromite is a common minor constituent of basic igneous rocks of the peridotite and pyroxenite type.

The Economic Aspect of Geology

C. K. Leith

In this locality the original rock is a peridotite, relatively low in nickel, which has been altered to serpentine.

The Economic Aspect of Geology

C. K. Leith

In Georgia the asbestos, which is anthophyllite, occurs in lenticular masses in peridotite associated with gneiss.

The Economic Aspect of Geology

C. K. Leith

Small diamonds have been found in peridotite masses in Pike County, Arkansas, but these are of very little commercial value.

The Economic Aspect of Geology

C. K. Leith

Most of these occur along with troctolites, norites, serpentine and peridotite.

Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4

Various

British Dictionary definitions for peridotite peridotite noun

1. a dark coarse-grained ultrabasic plutonic igneous rock consisting principally of olivine

Derived Formsperidotitic (ˌpɛrɪdəʊˈtɪtɪk), adjectiveWord Origin for peridotite C19: from French, from peridot peridotite in Science peridotite [pĕr′ĭ-dō-tīt′, pə-rĭd′ə-]

1. A coarse-grained igneous rock that consists mainly of olivine and pyroxene. It is believed to be one of the main constituent rocks of the Earth’s mantle.