[meteorite-list] Question Regarding Lunar's

From: Darryl Pitt <darryl_at_meteoritecentral.com>
Date: Wed, 6 Jan 2010 19:53:39 -0500
Message-ID: <9FBFE9ED-C072-4DE5-B103-1141345C1188_at_dof3.com>

in part as a result of the absorptive qualities and absorption rates
of the different mineralogy.
there is also a difference between oxidation and staining....or
"tinting," the term i prefer for auction catalog descriptions ;-)



On Jan 6, 2010, at 2:30 PM, <cdtucson at cox.net> <cdtucson at cox.net> wrote:

> Greg,
> Interesting observation.
> Recently, I asked the same question to Randy Korotev. As I recall he
> said it was Earth oxidation.
> I then looked at all of the pictures on his web site and noticed
> that the only ones he shows with this red
> color are the Oman examples. Most of them are listed as Dhofar but
> Oman also includes your example in
> question; shisr161 .
> see pics at link;
> http://meteorites.wustl.edu/lunar/moon_meteorites_list_alumina.htm
>
> So, All do respect to Randy, to add to your question; why do only
> Oman lunar's have the red color inside. Because in some of them the
> red is only very deep inside
> and not near the original crustal area. You would think if it was
> weathering on Earth, it would be near the surface area and not only
> deep inside as clearly is the case in some of the pics. ? Many
> Meteorites from other finds do have the red oxidation on the crust
> like Millbillillie but not exclusively on just in interior areas
> like the Oman clan. So , again why is that?
> Thanks Carl
> --
> Carl or Debbie Esparza
> Meteoritemax
>
>
> ---- Greg Stanley <stanleygregr at hotmail.com> wrote:
>>
>> List:
>>
>> I have a question regarding Lunar meteorites. In many of the pics
>> on various websites I have noticed a reddish/brown color in the
>> meteorites. I figured that most would be more grayish and white.
>> Is the reddish color from terrestrial means? Does it oxidize after
>> landing? Or is this reddish color not related to oxidation at all
>> and is the actual color it would be on the moon? I would think
>> that there would be no oxidation on the moon or in space, due to
>> the lack of oxygen.
>>
>> Shisr161 is an example.
>>
>> http://www.meteoris.de/img/ncc-lun/Shisr161-2.884g.jpg
>>
>> I can't get over how 'terrestrial' lunars look. Who knows... maybe
>> I've stepped on one without knowing it.
>>
>> Greg S.
>>
>>
>>
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Received on Wed 06 Jan 2010 07:53:39 PM PST