[meteorite-list] Shirokovsky

From: mark ford <markf_at_meteoritecentral.com>
Date: Tue Jul 6 12:45:12 2004
Message-ID: <6CE3EEEFE92F4B4085B0E086B2941B311A34D4_at_s-southern01.s-southern.com>

Marc,

I believe it doesn't have any structure, if it did have widmanstattens
then there could be little doubt I guess!

I really don't think you could pour molten iron over sharp olivine
crystals and get the same end result as Shirokovsky - wouldn't the
Olivine just shatter into tiny pieices or craze over? Molten Iron is
hellishly hot, You would probably need to do it under intense
pressure...

 If it has been faked (and im not saying it is..) I take my hat of to
the genius who made it!

Your point about Lunar origins is an itersesting one, I don't know
enough about the chemistry to answer that, but the issue is I think that
the metal seemed extra terrestrial and the Olivine Terrestrial, that's
the anomaly

This stuff certainly had a lot of quite expert people 'fooled' that's
for sure.

To me the circumstances surrounding it's 'discovery' where certianly a
bit odd too, (although part of that may be due to translation from
Russian) wasn't it found under water in a cooling pond?


In all the pictures I have seen, to me it doesn't quite seem right for a
pallasite the crystals look a bit too 'sharp and pointed', (just an
observation) anyone agree with me?



Mark


-----Original Message-----
From: Marc D. Fries [mailto:m.fries_at_gl.ciw.edu]
Sent: 06 July 2004 17:06
To: meteorite-list_at_meteoritecentral.com
Subject: RE: [meteorite-list] Shirokovsky

Howdy,

I second the motion - a chunk of mantle boundary material, whether its
from Earth of not, deserves an explanation! Here's a question - if it
came from the Moon would it also fall on the terrestrial fractionation
line?

Any chance its a fake? Perhaps someone melted some Nantans and poured
them over a bunch of olivine or something like that. I've never seen
the
thing firsthand; does it have a Widmannstatten pattern?

Cheers,
MDF


>
> Hi,
>
> I would still like to know is, if indeed it is 'fake', how the hell
was
> it created? The debate seems to have 'gone quiet'.
>
> Coz I'd sure like to know how they did it! If it wasn't created where
> the hell did it originate?
>
> Seems to me that the evidence only really rests on the fact that the
> olivine isotopic's sit right on the terrestrial line... could this be
> explained away by any other cause except it being 'from Earth'.
>
>
>
> Mark Ford
>
>
>
>
> -----Original Message-----
> From: martinh_at_isu.edu [mailto:martinh@isu.edu]
> Sent: 06 July 2004 15:21
> To: meteorite-list_at_meteoritecentral.com
> Subject: Re: [meteorite-list] Shirokovsky
>
> Hi All,
>
> For those who save their Meteorite magazines, the Park Forest Special
> (August 2003) contains a informative (I think anyway) news story about
> the Shirokovsky rock.
>
> Also, anyone besides me notice some slight parallels between
Shirokovsky
> and the story Dan Brown (the Divinci Code author) weaves in his 2001
> book titled Deception Point?
>
> Cheers,
>
> Martin
>
>
>
>
>
>
>
>
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-- 
Marc D. Fries, Ph.D.
Postdoctoral Research Associate
Carnegie Institution of Washington
Geophysical Laboratory
5251 Broad Branch Rd. NW
Washington, DC 20015
PH:  202 478 7970
FAX: 202 478 8901
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Received on Tue 06 Jul 2004 12:42:36 PM PDT