[meteorite-list] LL6/7 classification answers

From: David Weir <dgweir_at_meteoritecentral.com>
Date: Thu Apr 22 10:32:55 2004
Message-ID: <4065B06F.823FF1CD_at_earthlink.net>

Hello list,

I'm staying out of the fray here, but since I shared my thoughts on
Mike's new meteorite classification (NWA 2092), and since we heard from
Jeff Grossman on the possible ambiguity of the exact meaning of this
classification, and since Mike wasn't able to share the classification
details, I felt compelled to investigate this classification with the
source, Dr. Ted Bunch, and report back here.

He told me that the LL6/7 was meant to imply a transition from 6 to 7,
and shared with me his reasons, which are consistent with a transitional
metamorphic stage between 6 and 7, despite any mutual exclusivity that
Dodd's rules may imply. Ted's use of a slash between the 6 and 7 is
consistent with the recommendations of NomCom, and is not used to imply
an "I'm not sure" scenario, which Jeff indicated is sometimes done. I'll
let the write-up speak for itself, which Ted says will likely be a full
separate entry in the Bulletin.

Regards,
David
Received on Sat 27 Mar 2004 11:48:47 AM PST