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

[Pekka Savolainen]

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