[meteorite-list] Exploring the Solar System in Antarctica (NWA vs Antarctica)

From: Mendy Ouzillou <ouzillou_at_meteoritecentral.com>
Date: Wed, 9 Oct 2013 13:41:22 -0700 (PDT)
Message-ID: <1381351282.36089.YahooMailNeo_at_web126202.mail.ne1.yahoo.com>

Carl,

I'm guessing that the reason for the disparity you speak of below between NWA and Antarctic meteorites is that EVERY antarctic meteorite get collected with no filtering while the NWA meteorites are brought to light by economic drivers. Old, weathered or uninteresting material does not get brought forth because almost no one wants to buy it and fewer still would bother classifying. It is an interesting aspect of the NWA dynamics that has not been explored and a perfect example of the role collectors and dealers play in acting as "filters" for the scientific community.

Best,


Mendy



On Wednesday, October 9, 2013 1:28 PM, Carl Agee <agee at unm.edu> wrote:

Northwest Africa 2737, the only other chassignite.
>*************************************
>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, Oct 9, 2013 at 2:21 PM, Carl Agee <agee at unm.edu> wrote:
>> Hi Mike,
>>
>> Add to that list NWA 7731 (L3.00). Semarkona (LL3.00) may still be
>> King, but 7731 is certainly a Prince!
>>
>> The only thing that Antarctic finds have going for them is that
>> weathering is much slower there than in North Africa, so fresher
>> material in general. But if I look at the ANSMET annual yield of
>> exceptional meteorites it is paltry compared to NWA. For planetaries
>> over the past ten years or so, NWA is definitely King!
>>
>> 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, Oct 9, 2013 at 1:45 PM, Galactic Stone & Ironworks
>> <meteoritemike at gmail.com> wrote:
>>> Hi Adam and List,
>>>
>>> Not taking into account old Saharan meteorites (like Nakhla and
>>> Tatahouine), here is a list of some recent meteorites from the Sahara
>>> that hold significant scientific and/or collector interest :
>>>
>>> "Black Beauty" (NWA 7034)
>>>
>>> Tissint
>>>
>>> Jbilet Winselwan
>>>
>>> NWA 5000
>>>
>>> NWA 998
>>>
>>> Almahata Sitta
>>>
>>> NWA 4301
>>>
>>> Zag
>>>
>>> Gebel Kamil
>>>
>>> Too many Vestans to list.
>>>
>>> I threw together this list on the fly and in an arbitrary fashion.
>>> The true number of Saharan meteorites valuable to science is subject
>>> to interpretation, but it surely numbers in the many hundreds.
>>> Granted, many NWA's are weathered and redundant, highly-equilibrated,
>>> ordinary chondrites.? But, many Antarctics are sub-gram fragments of
>>> paired finds.? So I think the signal-to-noise ratio of NWA's versus
>>> Antarctics is about even.
>>>
>>> Best regards and happy huntings,
>>>
>>> MikeG
>>>
>>> --
>>> -------------------------------------------------------------
>>> Web - http://www.galactic-stone.com
>>> Facebook - http://www.facebook.com/galacticstone
>>> Twitter - http://twitter.com/galacticstone
>>> Pinterest - http://pinterest.com/galacticstone
>>> -------------------------------------------------------------
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 10/9/13, Adam Hupe <raremeteorites at yahoo.com> wrote:
>>>>
>>>>
>>>> It should be changed to "A few of the best meteorites are found in
>>>> Antarctica but these days, most are found in the Sahara"
>>>>
>>>> Adam
>>>>
>>>>
>>>>
>>>>
>>>> ----- Original Message -----
>>>> From: Paul H. <inselberg at cox.net>
>>>> To: "meteorite-list at meteoritecentral.com"
>>>> <meteorite-list at meteoritecentral.com>
>>>> Cc:
>>>> Sent: Wednesday, October 9, 2013 11:40 AM
>>>> Subject: [meteorite-list] Exploring the Solar System in Antarctica
>>>>
>>>> Exploring the Solar System From the Ends of the Earth
>>>> The best meteorites are found in ? Antarctica.
>>>> By Meenakshi Wadhwa, Slate Magazine
>>>> http://www.slate.com/articles/technology/future_tense/2013/09/the_best_meteorites_are_found_in_antarctica.html
>>>>
>>>> Yours,
>>>>
>>>> Paul H.
>>>> ______________________________________________
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Received on Wed 09 Oct 2013 04:41:22 PM PDT