[meteorite-list] Mg/Fe+Mg of Bulk Planet

From: Bernd Pauli HD <bernd.pauli_at_meteoritecentral.com>
Date: Thu Apr 22 09:41:12 2004
Message-ID: <3A9982C1.9CCC5E52_at_lehrer1.rz.uni-karlsruhe.de>

Robert Beauford wrote:

> I'm still trying to figure out the significance of
> "Mg/Fe+Mg of Bulk Planet" in terms of planetary
> materials.

Hi All!

I don't know if the "Mg/Fe+Mg of Bulk Planet" refers to the distinction
between achondrite groups, but if it does, here is what I can offer:

The Fe/(Fe+Mg) ratio allows meteoriticists to measure the degree of
oxidation of mineral assemblages in metorites. When you plot Ca/Mg
vs. Fe/(Fe+Mg), you can easily recognize that the achondrites divide
themselves into distinct groups with clearly discernible gaps between
the aubrites, the diogenites, the howardites, the eucrites, etc.


Best wishes,

Bernd
Received on Sun 25 Feb 2001 05:10:09 PM PST