[meteorite-list] I write to seek some advice re EMP

[Jeff Pringle]

>I'm also interested in some broader artikles on EMP with regard to
>meteorites ie wot particularly is EMP looking for and how it differentiates
>from say terrestrial rox




Electron Microprobe is (among other things) a more quantitative way of 
determining mineral composition that the traditional optical mineralogy 
methods, so to understand Fayalite you should look into basic mineralogy 
info. Fayalite is a component of Olivine, but separating out earth & ET 
rocks depends on more than just one mineral. It seems the Fe/Mn ratio of 
pyroxene is more commonly referenced. See for example "Pigeonholing 
Planetary Meteorites" in the publications section of this website:

http://www-curator.jsc.nasa.gov/antmet/marsmets/index.cfm

More on the differences between earth and space rocks can be figured out by 
reading this article:

http://www.lpi.usra.edu/science/treiman/frass_rock.pdf

More on the mineralogy of meteorites can be found in many places, but this 
one is tops:

http://www.meteoritestudies.com/

Look through the old bulletins here:

http://www.meteoriticalsociety.org/simple_template.cfm?code=pub_bulletin

Pick a couple good key words and more articles than you can read in a year 
are here:

http://adsabs.harvard.edu/abstract_service.html



Best of luck on your rocks!