[meteorite-list] AD - Black Beauty

From: Carl Agee <agee_at_meteoritecentral.com>
Date: Thu, 14 Feb 2013 09:45:11 -0700
Message-ID: <CADYrzho56AwfeQJ-8YJJeUSycVz4uK+VobWC2NX7_CsptWmHbQ_at_mail.gmail.com>

I agree, in fact I have done numerous break/chip/cleave on BB,
especially for the destructive analyses for isotopes. But the flat
surfaces from saw cuts, ground and polished, are needed for microprobe
and SEM.

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 9:38 AM, Galactic Stone & Ironworks
<meteoritemike at gmail.com> wrote:
> A sterile set of manual tools works wonders - good old fashioned
> cleave/break/chip.  :)
>
> --
> -------------------------------------------------------------
> Web - http://www.galactic-stone.com
> Facebook - http://www.facebook.com/galacticstone
> Twitter - http://twitter.com/GalacticStone
> Pinterest - http://pinterest.com/galacticstone
> RSS - http://www.galactic-stone.com/rss/126516
> -------------------------------------------------------------
>
>
> 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
>>>>> ______________________________________________
>>>>>
>>>>> Visit the Archives at http://www.meteorite-list-archives.com
>>>>> Meteorite-list mailing list
>>>>> Meteorite-list at meteoritecentral.com
>>>>> http://six.pairlist.net/mailman/listinfo/meteorite-list
>>>>>
>>>>>
>>> ______________________________________________
>>>
>>> Visit the Archives at http://www.meteorite-list-archives.com
>>> Meteorite-list mailing list
>>> Meteorite-list at meteoritecentral.com
>>> http://six.pairlist.net/mailman/listinfo/meteorite-list
>>>
>>>
>> ______________________________________________
>>
>> Visit the Archives at http://www.meteorite-list-archives.com
>> Meteorite-list mailing list
>> Meteorite-list at meteoritecentral.com
>> http://six.pairlist.net/mailman/listinfo/meteorite-list
>>
>
>
Received on Thu 14 Feb 2013 11:45:11 AM PST


Help support this free mailing list:



StumbleUpon
del.icio.us
reddit
Yahoo MyWeb