[meteorite-list] NWA2461 LL3 Fa and Fs values ???

[tett]

Hello List,

Have just purchased a nice slice of a low TKW LL3.  NWA 2461.

The met bulliten lists Fayalite (mol%): 26.5±2.5 
      Ferrosilite (mol%): 12.5±7 


The Met Bulliten also gives an official classification of an LL3.  The encyclopedia of meteorites states that an LL3 should have a Fs value of 32-40 so how can this be grouped as an LL3?  The Fa value fits.

Any help would be gratly appreciated.

Cheers,

Mike Tettenborn
Owen Sound, Ontario
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://six.pairlist.net/mailman/private/meteorite-list/attachments/20070405/ee2a4371/attachment.html>