[meteorite-list] AD - Black Beauty

From: Galactic Stone & Ironworks <*meteoritemike_at_meteoritecentral.com*> Date: Thu, 14 Feb 2013 11:38:02 -0500 Message-ID: <CAKBPJW8+bA+0G6=U2aDsm82vf+Ps3epDdMWoh=1tLAm=cEm4JQ_at_mail.gmail.com> · meteoritemike_at_meteoritecentral.com

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On 2/14/13, Carl Agee <agee at unm.edu> wrote:
> Hi Mendy,
>
> No, cutting in distilled water has no effect on the oxygen isotopes of
> the bulk rock, nor does it affect the hydrogen isotopes of the martian
> water in NWA 7034. Simply drying the slice after cutting is all you
> need to do. Remember, this is a desert meteorite, exposing it to
> distilled water for a few minutes at room temperature in a saw is
> nothing compared to many years of exposure to the elements in the
> Sahara. Nonetheless, NWA 7034 is relatively unweathered meteorite, it
> is amazingly hard and solid, tough to chip or break. I attribute this
> to its welding during volcanoclastic eruption and/or impact. The only
> weathering products we have identified in NWA 7034 are some fine
> calcite veins that can be traced back to the surface. These are found
> primarily in the outer edges, and are less common the deeper you go
> into the 320 g main mass. On the other hand, we are planning to break
> some material from the deep interior, without water, to search for any
> water soluble minerals that may be affected by water cutting. Lots of
> work still to do! -- mainly because every slice Black Beauty shows
> something new.  In my opinion, this rock is actually a volcanic
> conglomerate, that has picked up pebbles and soil particles during its
> flow over the martian surface or during impact. So, in a way each new
> piece of Black Beauty may reveal something more about Mars. I'll stop
> there, as you can see asking me about NWA 7034 is dangerous --
> especially if you are not ready for a lengthy reply!
>
> Carl Agee
>
> --
> 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 Thu, Feb 14, 2013 at 8:34 AM, Mendy Ouzillou <ouzillou at yahoo.com> wrote:
>> Carl,
>>
>> I'm curious. Would cutting the stone in distilled water affect the oxygen
>> isotope ratios? If I remember correctly that was one indicator that was
>> used as proof of water on Mars.
>>
>> Thank you!
>>
>> Mendy
>>
>> On Feb 13, 2013, at 11:37 PM, jason utas <jasonutas at gmail.com> wrote:
>>
>> Hello Carl,
>> On the contrary, the only reason I included the statement regarding
>> ethylene glycol was because I was informed by a customer that at least
>> some of the material on the market had been cut with synthetic
>> lubricant.  S/he made a point of purchasing specimens that had not
>> been 'messed with' after making inquiries.
>>
>> And, yes, that statement applies.  Perhaps not to the material from
>> the 320 gram stone, but the vast majority of the material I have seen
>> for sale has come from other sources.
>>
>> I've only seen a few grams of slices from Mr. Piatek's stone, but it
>> does not surprise me that you would have curated it well.
>>
>> Though I will say that it was a bit steep.
>>
>> Regards,
>> Jason
>>
>> On Tue, Feb 12, 2013 at 7:31 AM, Carl Agee <agee at unm.edu> wrote:
>>> Hi Jason,
>>>
>>> I looked at your link. I think you need to revise it since it contains
>>> false information about the cutting of Black Beauty (NWA 7034) -- at
>>> least if you are referring to the 320 g main mass that is at the IOM?
>>> The cutting was done with distilled water -- NOT ethylene glycol
>>> (antifreeze). Also, stating in your link that our samples were "messed
>>> with" seems to be a rather unusual way to describe cutting with a fine
>>> diamond wire.
>>>
>>> If you want to know anything specific about Black Beauty, I would be
>>> happy to talk to you about it and how to identify it in hand sample
>>> and nature of the reduced carbon -- my team has been studying this
>>> meteorite with numerous lab techniques since August 2011.
>>>
>>> PS: the Science Article print version will be on newsstands Feb. 15.
>>>
>>> Carl Agee
>>>
>>> --
>>> 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 Tue, Feb 12, 2013 at 3:24 AM, jason utas <jasonutas at gmail.com> wrote:
>>>>
>>>> Hello All,
>>>> I just finished the page for some fragments of the unique water and
>>>> soil-bearing Martian regolith breccia paired with NWA 7034 and a few
>>>> other stones.
>>>> Please see our website for available specimens.
>>>>
>>>> http://www.fallsandfinds.com/page88.php
>>>>
>>>> Thanks!
>>>> Jason
>>>>
>>>> IMCA 7630
>>>> ______________________________________________
>>>>
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>>>>
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