Dear Mark, Only the gem variety is called peridot. Dave F. 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 > > ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
