[meteorite-list] "Bubbly" meteorite

[Meteoriteshow]

Hi Darren, Göran and All,

I would guess the same as Göran. We have already seen such "cemented sand grains" on the surface of meteorites that we found in the
Desert... Most of the time on the side that was in contact witth the ground.
Kind regards,

Frederic Beroud
http://www.meteoriteshow.com
IMCA member # 2491 (http://www.imca.cc/)

----- Original Message -----
From: "Göran Axelsson" <axelsson at acc.umu.se>
To: <cynapse at charter.net>
Cc: <meteorite-list at meteoritecentral.com>
Sent: Tuesday, November 08, 2005 2:46 AM
Subject: Re: [meteorite-list] "Bubbly" meteorite


> My guess is that iron hydroxides (rust, limonite) have cemented small
> grains of quartz sand to the surface. I've seen it plenty of times in
> sulphide bearing rocks that's been weathered for a while.
> If the meteorite is an inch across then the biggest grains is 0.7 mm in
> size, quite common for sand.
>
> ... but then I might be wrong.
>
> /Göran
>
> Darren Garrison wrote:
>
> >I don't know how else to describe this piece other than "bubbly"-- on one side there are
> >transluscent yellow (olivine?) "bubbles" extending outside of the fusion crust.  I have one other
> >meteorite that has "bubbles" like this but they were smaller and I couldn't get a good photo of
> >them.  The meteorite is around an inch across.  Do you see this often?
> >
> >
> >http://webpages.charter.net/garrison6328/bubbly_meteorite_small.jpg
> >
> >http://webpages.charter.net/garrison6328/bubbly_meteorite.jpg
> >
> >
> >
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