[meteorite-list] NWA 753

From: mark ferguson <refam_at_meteoritecentral.com>
Date: Thu Apr 22 10:18:26 2004
Message-ID: <20030212040617.36972.qmail_at_web40205.mail.yahoo.com>

Hi John, Tom and list
John, would a inert invironment help sabilize this
oxidation? Like vacuum sealing them in a food storage
bag like whats advertised on the tv? Or, for a more
pleasing display, one of the little globes used for
opal with the large rubber stopper back filled with
helium (helium is easy to get from local stores which
they fill ballons with is why I mention it). I'm
always wondering about long term storage because, as
you know, once something starts oxidizing, it often
does so very quickly.
Mark

--- John Divelbiss <j.divelbiss_at_worldnet.att.net>
wrote:
> Tom,
>
> First off, many of R pieces from the desert are
> oxidized a bit.
>
> According to "Rocks from Space", these meteorites
> have very little free
> metal "floating around" in the makeup. Like normal
> chondrites with nickel
> iron. The metal is in the sulfide forms of
> pyrrhotite and pentlandite. The
> iron level in the olivine is the highest among
> chondrites.
>
> All that gives this type of meteorite a higher
> rate/chance of oxidation than
> others.
>
> Hope this helps,
>
> John
> ----- Original Message -----
> From: "Tom aka James Knudson"
> <knudson911_at_frontiernet.net>
> To: "meteorite-list"
> <meteorite-list_at_meteoritecentral.com>
> Sent: Tuesday, February 11, 2003 6:58 PM
> Subject: [meteorite-list] NWA 753
>
>
> > Hello List, I have a slice of NWA 753. It has some
> rust colored spots
> > through out the matrix. What Am I looking at? If
> it is rust, what rusted?
> > Thanks, Tom
> > The proudest member of the IMCA 6168
> >
> >
> >
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Received on Tue 11 Feb 2003 11:06:17 PM PST