Found 2 items, similar to Peridotite.
English → English (WordNet) Definition: peridotite peridotite n : a dark coarse-grained igneous rock consisting principally of olivine
English → English (gcide) Definition: Peridotite Peridotite \Per"i*do*tite\, n. [Cf. F. p['e]ridotite.] (Min.) An eruptive rock characterized by the presence of chrysolite (peridot). It also usually contains pyroxene, enstatite, chromite, etc. It is often altered to serpentine. [1913 Webster] Note: The chief diamond deposits in South Africa occur in a more or less altered peridotite. [1913 Webster]