[meteorite-list] Is This All Olivine

From: Dave Mouat <dmouat_at_meteoritecentral.com>
Date: Thu Apr 22 09:54:05 2004
Message-ID: <3C6EFF58.2B93FD6F_at_dri.edu>

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 <dmouat_at_dri.edu>
> To: DiamondMeteor <DiamondMeteor_at_hotmail.com>
> Cc: meteorite-list <meteorite-list_at_meteoritecentral.com>
> 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
> > > Meteorite-list_at_meteoritecentral.com
> > > http://www.pairlist.net/mailman/listinfo/meteorite-list
> >
> >
> > ______________________________________________
> > Meteorite-list mailing list
> > Meteorite-list_at_meteoritecentral.com
> > http://www.pairlist.net/mailman/listinfo/meteorite-list
Received on Sat 16 Feb 2002 07:54:48 PM PST