[meteorite-list] NWA 6704 - Oxygen Isotope Chart

[Michael Gilmer]

The plot thickens.... (no pun intended)

You gotta love a good meteorite mystery.  So the big $64 question is -
what the heck is it?

It will be interesting to see if a parent body match ever comes to
light for this stone.

Best regards,

MikeG

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Galactic Stone & Ironworks - Meteorites & Amber (Michael Gilmer)

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On 6/1/11, Greg Hupé <gmhupe at centurylink.net> wrote:
> Dear List Members,
>
> With my announcement of NWA 6704 yesterday, I received a couple of emails
> from people who commented how it looks like a member of the HED group;
> diogenite or olivine-diogenite. The lead specialist in classifying NWA 6704,
> Tony Irving, put together this oxygen isotope chart with accompanying
> description to help people visualize the differences. I hope this is
> helpful!
>
> http://www.lunarrock.com/nwa6704/nwa6704chart1.jpg
> "Oxygen isotopic compositions of various achondrites relative to the
> terrestrial fractionation line (TFL).
> NWA 6704 plots well below the TFL within the broad field for members of the
> acapulcoite-lodranite clan,
> and far from the fields for eucrites, diogenites and mesosiderites."
>
> Best Regards,
> Greg
>
> ====================
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