[meteorite-list] Dunite meteorites?

From: Carl Agee <agee_at_meteoritecentral.com>
Date: Wed, 24 Jul 2013 15:48:42 -0600
Message-ID: <CADYrzho6T70nB+UzOto1TjA0mrcN=cWdNcnTUe9Zm_m=M=XAPw_at_mail.gmail.com>

Hi Mendy,

If you look at the literature, there are only a handful of brachinite
oxygen data sets, so "anomalous" may be a poorly defined term. The
brachinite trend could actually intersect or cross-over the TFL --
perhaps that is what this one is doing. Or, it could be terrestrial
contamination, or as you suggest a exotic component, hard to tell at
this point.

Carl


*************************************
Carl B. Agee
Director and Curator, Institute of Meteoritics
Professor, Earth and Planetary Sciences
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126

Tel: (505) 750-7172
Fax: (505) 277-3577
Email: agee at unm.edu
http://meteorite.unm.edu/people/carl_agee/



On Wed, Jul 24, 2013 at 2:41 PM, Mendy Ouzillou <ouzillou at yahoo.com> wrote:
> Carl,
>
> I understand the words, "heterogeneous oxygen isotopes" but not the meaning.
> Does this imply two different parent bodies merged together? This of course
> doesn't make sense because then it would be considered an anomalous
> achondrite. I did not think the the O-isotopes were supposed to vary to the
> degree that they can be considered heterogeneous.
>
> Thanks!
>
> Mendy Ouzillou
>
> ________________________________
> From: Carl Agee <agee at unm.edu>
> To: jack satkoski <jackoski at yahoo.com>
> Cc: meteoritelist meteoritelist <meteorite-list at meteoritecentral.com>
> Sent: Wednesday, July 24, 2013 1:37 PM
> Subject: Re: [meteorite-list] Dunite meteorites?
>
> The brachinite dunite is Northwest Africa 7904.
>
> *************************************
> Carl B. Agee
> Director and Curator, Institute of Meteoritics
> Professor, Earth and Planetary Sciences
> MSC03 2050
> University of New Mexico
> Albuquerque NM 87131-1126
>
> Tel: (505) 750-7172
> Fax: (505) 277-3577
> Email: agee at unm.edu
> http://meteorite.unm.edu/people/carl_agee/
>
>
>
> On Wed, Jul 24, 2013 at 12:08 PM, Carl Agee <agee at unm.edu> wrote:
>>
>> Hi Jack,
>> But there are dunite meteorites! I just classified a brachinite that is a
>> dunite. Also the martian "C" in SNC is for the dunite Chassigny. Most PACs
>> are olivine rich and some are dunites with 90% or more olivine.
>>
>> Carl Agee
>>
>> On Jul 24, 2013 10:55 AM, "jack satkoski" <jackoski at yahoo.com> wrote:
>>>
>>> Wondering why no predominately olivine or dunite meteorites exist? Does
>>> this have something to do with proto planet size and crustal evolution?
>>>
>>> Thanks,
>>>
>>> Jack Satkoski
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Received on Wed 24 Jul 2013 05:48:42 PM PDT