[meteorite-list] Rob L's NWA 5764 LL6-L4, the first ever LL-L chondrite

From: bernd.pauli at paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: 29 Apr 2009 21:39:09 UT
Message-ID: <DIIE.000000A900003B66_at_paulinet.de>

Rob writes:

"The unclassified 502g Acfer I bought in 2003 ..."

and:

"The stone consists of cm-sized dark L4 clasts (Fa 25.58+0.53,
 Fs 22.2+0.31) in LL6 (Fa 31.53?0.64, Fs 26.54+0.44) material."

Thanks Rob! A database query (personal database) of LL6 A?fer stones
yields one LL6 A?fer stone that has similar Fa and Fs values and that is
A?fer 030. The values are strikingly similar: Fa31.7, Fs26.5. Moreover,
your stone looks pretty weathered in some matrix areas, ... this would fit
the A?fer 030 description as an S3; W4. A?fer 030 is also brecciated and
its metal is described as "oxidized", which implies a cut surface should
have brownish oxidation stains.

Maybe these stones are paired?!?

Cheers,

Bernd
Received on Wed 29 Apr 2009 05:39:09 PM PDT