[meteorite-list] NWAs

From: drtanuki <drtanuki_at_meteoritecentral.com>
Date: Thu Apr 22 09:52:20 2004
Message-ID: <3D657745.4AF86960_at_tkc.att.ne.jp>

Dear List Members;
   A meteorite cannot be paired unless analysis is done to prove so. A
practice that is common in the market is to classify one stone
(sometimes more) and call the remainder the same. The fact that they
are "called" the same does not prove that they are the same type of
meteorite or even paired. Dean's NWAs all look similar due to the local
environment that they were found (probably within the same region of the
Sahara).
     Desert varnish or sand erosion covers most of the meteorites and
rocks in the Sahara and other deserts. Desert varnish is characteristic
in colour or texture depending on the local environment; and even the
terrestrial rocks look similar in appearance.
    I hope this answers some of the questions that I have been asked to
respond to. Sincerely, Dirk Ross....Tokyo
Received on Thu 22 Aug 2002 07:44:07 PM PDT