[meteorite-list] Kalahari Lunars

From: Graham Ensor <graham.ensor_at_meteoritecentral.com>
Date: Thu, 9 Jun 2016 00:00:31 +0100
Message-ID: <CAJkn+kahaDP=m=XGU7E-X0Agnq_BY9fX8rGUzTrYBLO7+Xfz3A_at_mail.gmail.com>

Seems to be enough around for the science to be done anyway....
http://meteorites.wustl.edu/lunar/stones/kalahari008.htm

On Wed, Jun 8, 2016 at 7:34 PM, Raremeteorites via Meteorite-list <
meteorite-list at meteoritecentral.com> wrote:

> Interesting, could long-term terrestrial cosmic ray exposure account for
> these "seemingly impossibly" short transit times:
>
> http://www.lpi.usra.edu/meetings/metsoc2005/pdf/5270.pdf
>
> I noticed in this abstract that K. Nishiizumi, whom I have a great deal of
> respect for, states the following:
>
> The cosmogenic nuclide concentrations in Kalahari 008 and 009 are the
> lowest activities in stony meteorites ever measured.
>
> If both objects are lunar meteorites, the transition time from the Moon to
> the earth was 230?90 yr and ejection depth was more than >1,100 g/cm2 on
> the Moon. Small amounts of cosmogenic nuclides are also produced in-situ on
> the Earth?s surface.
>
>
>
> ----- Original Message ----- From: "Carl Agee" <agee at unm.edu>
> To: "Raremeteorites" <raremeteorites at centurylink.net>
> Cc: "meteoritelist meteoritelist" <meteorite-list at meteoritecentral.com>
> Sent: Wednesday, June 08, 2016 10:59 AM
> Subject: Re: [meteorite-list] Kalahari Lunars
>
>
>
> According to the MetBull there are 20 gram samples and thin sections
> of both 008 and 009 at Universit?t M?nster, M?nster, Germany. There
> has been science done on Kalahari 008 and 009. Aside from microprobe,
> they have radiometric ages, oxygen isotopes, as well as cosmic ray
> exposure. As Randy Korotev notes, they are totally different rocks but
> with similar lunar ejection ages - only 350 ? 120 yr for Kalahari 008
> and 220 ? 40 yr for Kalahari 009, which are the shortest exposure ages
> of any meteorite.
>
> Carl
> *************************************
> Carl B. Agee
> President, Consortium for Materials Properties Research in Earth
> Sciences (COMPRES)
> 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/
> http://compres.us/about-us/compres-president
>
>
>
> On Wed, Jun 8, 2016 at 11:44 AM, Raremeteorites via Meteorite-list
> <meteorite-list at meteoritecentral.com> wrote:
>
>> In other words, they are worthless from a monetary standpoint just like
>> meteorites found on public lands here in the United States and many other
>> countries.
>>
>> The best that could be hoped for, if they still or ever existed, is that
>> they are made available for scientific research from the government that
>> owns them.
>>
>> Adam
>>
>>
>>
>> ----- Original Message ----- From: "Chauncey Walden via Meteorite-list"
>> <meteorite-list at meteoritecentral.com>
>> To: <meteorite-list at meteoritecentral.com>
>> Sent: Wednesday, June 08, 2016 8:58 AM
>> Subject: [meteorite-list] Kalahari Lunars
>>
>>
>>
>> There remains the fact that if any of this material actually appears in
>>> the market it would immediately be claimed by the government of Botswana.
>>> Their President has a keen interest in meteorites. That being said, the
>>> last
>>> time I was in the Central Kalahari on photographic safari I definitely
>>> kept
>>> an eye out for rocks. The White Kalahari has hundreds of feet of sand
>>> with
>>> organics but rocks are rare.
>>> Chauncey
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>>
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>
>
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Received on Wed 08 Jun 2016 07:00:31 PM PDT