AW: [meteorite-list] Meteorite with holes?!?

From: Jörn Koblitz <koblitz_at_meteoritecentral.com>
Date: Wed Aug 18 08:02:08 2004
Message-ID: <E5E6112EA31FA24CB448E091C6883C050EBCA6_at_server2000.microfab.de>

Hi Jeff,

I think, it's weathered out - better "washed out" - matrix material, which has also removed some larger chondrules. Some ordinary chondrites - like Bjurb?le or Saratov - got very soft and powdery matrix material. Chondrules can easily be removed from these meteorites.

J?rn

> -----Urspr?ngliche Nachricht-----
> Von: Jeff Kuyken [mailto:jeff_at_meteoritesaustralia.com]
> Gesendet: Mittwoch, 18. August 2004 13:51
> An: Meteorite List
> Betreff: Re: [meteorite-list] Meteorite with holes?!?
>
>
> Hey Graham,
>
> That's a really good point which I also considered too
> however the stone is
> no less solid than most other ordinary chondrites out there.
> The holes are
> also too varied in size and often of an irregular nature to
> be the result of
> dislodged chondrules. Quite a few are also more of an oval shape too.
> Apologies as that's probably a little hard to see in the
> photos. If they are
> vesicles, I don't know how they could have formed. Maybe the
> stone was part
> of a larger impact melt?
>
> Thanks,
>
> Jeff Kuyken
> I.M.C.A. #3085
> www.meteorites.com.au
> ----- Original Message -----
> From: Graham Christensen
> To: Meteorite List
> Sent: Wednesday, August 18, 2004 9:10 PM
> Subject: Re: [meteorite-list] Meteorite with holes?!?
>
>
> It looks to me like the holes are just where chondrules
> have fallen out of
> the matrix. From what I understand, vesicles form by gas
> being "boiled
> out"
> of liquid rock. That's why they've only been found in a
> eucrite, because
> it's an igneous rock. It's wierd that that is the only one
> that looks like
> that though. Perhaps a loose matrix or something?
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Graham Christensen
> voltage_at_telus.net
> http://www.geocities.com/aerolitehunter
> msn messenger: majorvoltage_at_hotmail.com
>
>
> ----- Original Message -----
> From: "Jeff Kuyken" <jeff_at_meteoritesaustralia.com>
> To: "Meteorite List" <meteorite-list_at_meteoritecentral.com>
> Sent: Wednesday, August 18, 2004 5:03 AM
> Subject: [meteorite-list] Meteorite with holes?!?
>
>
> > G'day List,
> >
> > Just received what looks like an ordinary chondrite, but
> the weird thing
> is
> > that it is loaded with holes in the surface. The 37g
> piece has 6 sides
> of
> > which every one has some type of hole. They are quite prolific
> throughout
> > the whole stone and vary widely in size. I've created a
> quick page at
> the
> > address below if anyone is interested in taking a look. I
> will probably
> > slice it at some stage to check out the interior and will
> post more
> photos
> > at that stage. I'd be interested in hearing any comments
> or theories on
> this
> > one as this is the first meteorite I've personally seen
> with so many
> holes.
> >
> > http://www.meteoritesaustralia.com/features/holes.html
> >
> > Cheers,
> >
> > Jeff Kuyken
> > I.M.C.A. #3085
> > www.meteorites.com.au
> >
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> >
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Received on Wed 18 Aug 2004 08:05:22 AM PDT