Per"i*do*tite (?), n. [Cf. F. p'eridotite.] 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.

⇒ The chief diamond deposits in South Africa occur in a more or less altered peridotite.


© Webster 1913.

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