peridot (peridot)

[F. péridot = Pg. It. per i do to, ML. peritot (after F.), also period us (appar. after L. period us, period), a kind of emerald; origin not clear.] Same as chrysolite. peridotic (per-i-dot'ik), a. [ four have been found in meteorites as in terres cases. tered into that mineral, so that the distinction between olivin and serpentine rocks is one not easily preserved. Peridotite is known to be in some cases an eruptive rock, and is generally supposed to have been such in all ca That most serpentine rocks are the result of the alteration of some peridotic material is also generally conceded; that serpentine may have been produced in some other way is po ible, but has not been distinctly proved.