[meteorite-list] NWA 6694 / Abee

[Alan Rubin]

Many of the clasts in Abee have metal-rich rims.  These rims surrounded the 
clasts during the last impact-melting event wherein the matrix was melted 
and the clasts generally survived and helped to quench the melt.  In many of 
these metal rims, there are euhedral grains of enstatite that crystallized 
from the matrix melt.


Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA  90095-1567
phone: 310-825-3202
e-mail: aerubin at ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html


----- Original Message ----- 
From: "Larry Atkins" <thetoprok at aol.com>
To: <fcressy at prodigy.net>; <meteorite-list at meteoritecentral.com>
Sent: Friday, September 16, 2011 6:12 AM
Subject: Re: [meteorite-list] NWA 6694 / Abee


> Hi Frank, List,
>
> i see the shadows but that's not what I'm talking about. If you lookk at 
> the individual chunks and pieces in the Abee you will notice that many of 
> them appear to have a lighter 'rim' around them, follow me? Now that I've 
> looked at other pictures of different specimens, I'm thinkning it may have 
> to do with metal shine but I'm not sure. I'm wondering what might cause 
> this appearance of a rim around the individual pieces that make up the 
> meteorite.
>
> Thanks.
>
>
> Sincerely,
> Larry Atkins
>
> IMCA # 1941
> Ebay alienrockfarm
>
>
>
> -----Original Message-----
> From: Frank Cressy <fcressy at prodigy.net>
> To: Larry Atkins <thetoprok at aol.com>
> Cc: meteoritelist <meteorite-list at meteoritecentral.com>
> Sent: Wed, Sep 14, 2011 11:40 pm
> Subject: Re: [meteorite-list] NWA 6694 / Abee
>
>
> Hi Larry & all,
>
> I think the "weathering effects" on the Abee are shadows on the large 
> slice. Notice that they're different in each image.
>
> Frank
>
>
>
> ----- Original Message ----
> From: Larry Atkins <thetoprok at aol.com>
> To: meteorite-list at meteoritecentral.com
> Sent: Wed, September 14, 2011 8:17:35 PM
> Subject: [meteorite-list] NWA 6694 / Abee
>
> Hello List,
>
> Several list members brought it to my attention that the last 3 images
> in Edwin's photo album are of Abee, not NWA 6694. My mistake. I
> should've figured it out when I noticed the 'weathering' effect was not
> evident in the first images of the hand specimen, '6694, only the last
> 3 images of the big slab of Abee.
>
> I didn't see any comments on this weathering effect seen in clasts of
> the Abee, can anyone explain what's going on there? Having not ever
> seen a piece of it in person it's hard to tell exactly what I'm looking
> at. Now that I know it's an EH chondrite I'm wondering if the high
> metal is somehow causing the effect.
>
> Thanks!
>
> Sincerely,
> Larry Atkins
>
> IMCA # 1941
> Ebay alienrockfarm
>
>
>
>
>
>
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