[meteorite-list] NWA Meteorites and Oxidation?

From: Walter Branch <branchw_at_meteoritecentral.com>
Date: Thu Apr 22 10:04:54 2004
Message-ID: <014c01c208da$bac105a0$21d93fd0_at_cc516468a>

Bernd,

Thanks for the breakdown. The weathering grades appear not to take a normal
distribution, rather there appears to be a skew toward the lower grades.

For comparison, can you produce that same chart but excluding the NWA
meteorites in your database?

-Walter

-----------------------------------------------
Walter Branch, Ph.D.
Branch Meteorites
322 Stephenson Ave., Suite B
Savannah, GA 31405 USA
www.branchmeteorites.com
----- Original Message -----
From: "Bernd Pauli HD" <bernd.pauli_at_lehrer1.rz.uni-karlsruhe.de>
To: "Walter Branch" <branchw_at_bellsouth.net>
Cc: <Meteorite-list_at_meteoritecentral.com>
Sent: Friday, May 31, 2002 11:00 AM
Subject: Re: [meteorite-list] NWA Meteorites and Oxidation?


> Walter Branch wrote:
>
> > In looking over many pictures of NWA meteorites and
> > examining some which I have in my collection, many
> > look heavily oxidized. Is this just my eyes or are
> > they a heavily oxidzed group, in general? Of course,
> > I have seen exceptions but even the carbonaceous stones
> > appear this way to me.
>
> Hello Walter and List,
>
> Survey of weathering degree of
> NWA's presently in my databases:
>
> W0 or W0/1: 10
> W1 or W1/2: 62
> W2 or W2/3: 66
> W3 or W3/4: 72
> W4 or W4/5: 14
> W5 or W5/6: 10
> W6: 03
>
> This survey does not yet include Met.Bull. 86 and
> the countless provisional or unclassified NWA's.
>
> Cheers,
>
> Bernd
>
Received on Fri 31 May 2002 03:38:11 PM PDT