[meteorite-list] NWA 856 - NOT paired to NWA 480

From: Robert Verish <bolidechaser_at_meteoritecentral.com>
Date: Thu Apr 22 10:06:57 2004
Message-ID: <20021009173728.12073.qmail_at_web80306.mail.yahoo.com>

"The basaltic shergottite Northwest Africa 856
(NWA 856): Petrology and chemistry"
 
by: A. Jambon*, J. A. Barrat, V. Sautter, Ph. Gillet,
C. Göpel, M. Javoy, J. L. Joron and M. Lesourd

[Meteoritics & Planetary Science 37-9 (September 2002)

© Meteoritical Society, 2002. Printed in USA.]

The abstract is on the following web page:

http://www.uark.edu/~meteor/abst37-9.htm#jambon

Congratulations to the authors. This paper sets the
standard for an all-inclusive, cross-discipline study
of an individual [martian] meteorite. You'll want to
get your hands on a copy of the latest issue of M&PS.

Here's a sample from the abstract:

"On the basis of grain size, pyroxene zoning and
composition, abundance of silica inclusions associated
with maskelynite, trace element abundances, REE
pattern and oxygen isotopes, pairing with NWA 480 is
excluded." [also excluded was Los Angeles]
"The similarity with Shergotty and Zagami is
striking." [but not similar to Los Angeles]
"The only significant differences are a larger grain
size, a greater abundance of silica and melt pockets,
a slightly more restricted range of pyroxene
compositions and the absence of significant
mesostasis."

Bob V.


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Received on Wed 09 Oct 2002 01:37:28 PM PDT