[meteorite-list] Interesting crystal in meteorite - what is it?

From: Pekka Savolainen <nuuska_at_meteoritecentral.com>
Date: Tue, 04 Aug 2009 01:55:32 +0300
Message-ID: <4A776AE4.4070103_at_dlc.fi>

To me the form of the crystal looks like typical plagioglace feldspar,
(labradorite), (anorthosite + albite),
/N//a/(/A//l//S//i/3/O/8)/C//a/(/A/12/S//i/208).

You can find some pics of the crystals of finnish iridecent labradorite
(Spectrolite) from;

http://www.finnishspectrolite.com/finlang/galleria/kuvat/spektroliitti012.html


Just my 2 cents, please, let us know, what it really is, when have the piece
analyzed :-)

best,

pekka s




Gary Fujihara kirjoitti:
> Aloha,
>
> In a suspected lodranite recently procured from Morocco, I noticed a
> peculiar large, iridescent crystal in the broken face of the
> meteorite. I contacted some people on the metlist about this feature
> to get their thoughts, and Bernd Pauli has opined that the crystal is
> euhedral, iridescent and has the crystalline form of typical
> feldspars. But I have never seen a plagioclase feldspar look like
> this. Or is this some kind of iridescent olivine crystal? Or ???
>
> I am getting this specimen analyzed, but until then, I am hoping
> someone on the metlist has seen, and can identify this curious crystal.
>
> http://astroday.net/Meteorites.html
>
> Gary Fujihara
> AstroDay Institute
> 105 Puhili Place, Hilo, HI 96720
> (808) 640-9161, fujmon at mac.com
> http://astroday.net
>
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-- 
Pekka Savolainen
Solar Gems
Jokiharjuntie 4
FI-71330
Rasala
FINLAND
member of IMCA #5776
www.imca.cc

Received on Mon 03 Aug 2009 06:55:32 PM PDT