Peridot is the name for gem quality olivine Dave Mark Miconi wrote:
> Wouldn't/isn't terrestrial Olivine called Peridot anyway? > > Mark > ----- Original Message ----- > From: Dave Mouat <[EMAIL PROTECTED]> > To: DiamondMeteor <[EMAIL PROTECTED]> > Cc: meteorite-list <[EMAIL PROTECTED]> > Sent: Friday, February 15, 2002 10:42 AM > Subject: Re: [meteorite-list] Is This All Olivine > > > Mohamed > > I'm not sure what you mean by the word "large" as in "Olivine is rarely > found in > > large sizes" but in ultramafic rock exposures (some classic localities in > Oman, > > by the way) we can find pure unserpentinized olivine in masses the size of > the > > Hoba meteorite (60 tons) and larger. We find entire mountains of > serpentinized > > to somewhat serpentinized olivine. So, the presence of olivine would not > be > > diagnostic of a meteoritic origin. Isotopic (and other chemical) analyses > would > > be diagnostic. > > Dave > > > > DiamondMeteor wrote: > > > > > Dear List; > > > I found few rocks that look all composed of Olivine,, and I have read > before > > > that Olivine is rarely found in large sizes. I have measured its > specific > > > gravity and found it to be around 3.3 (Olivine: 3.2), its hardness and > also > > > its color is close to Olivine. > > > Some rocks have very thin fusion crust. > > > Please have a look,, and I would be delighted to hear your openion. > > > http://pages.britishlibrary.net/mhy10/meteor/olv.htm > > > > > > Best Regards > > > Mohamed > > > ---------------------------------------------------------------------- > > > http://pages.britishlibrary.net/mhy10/meteor/index.html > > > =============================================== > > > "As vision grows expression becomes difficult.", AnNiffari > > > > > > ______________________________________________ > > > Meteorite-list mailing list > > > [EMAIL PROTECTED] > > > http://www.pairlist.net/mailman/listinfo/meteorite-list > > > > > > ______________________________________________ > > Meteorite-list mailing list > > [EMAIL PROTECTED] > > http://www.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
