Talk:Peridotite
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[edit] Peridot
What if any, is the relationship between peridot and peridotite? Are the names a coincidence?
I do not know for sure but would think that it has something to do with the high amount of olivine in both aforementioned substances.
Peridot, the gemstone is in fact, magnesium rich forsterite olivine. Fayalite, the iron olivine, is usually less green and transparent.Rolinator 12:14, 28 December 2005 (UTC)
Yes. Peridot is a gem variety of olivine, while peridotite is a rock composed chiefly of olivine. Peridot, being an olivine, is a mineral. Peridotite, being a rock, is a composition of minerals but composed chiefly of peridot or another olivine mineral. --Valich 03:39, 31 October 2006 (UTC)
