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
