[meteorite-list] EUC-P vs. HOW and NWA

From: bernd.pauli_at_paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: Wed May 26 16:29:33 2004
Message-ID: <DIIE.0000002600002213_at_paulinet.de>

Martin wrote:

> NWA1553, which is paired with 1109, should have similar problems,
> some cuts have more than 10%, some less than 10% diog. components

Jeff wrote:

> NWA 1553 has not been officially described

Adam wrote:

> NWA1109 is definitely a eucrite as it has no diogenite component.

Adam also wrote:

> NWA 1648 was voted in as a polymict diogenite because it is
> mostly composed of orthopyroxene and the ratios indicated
> that several diogenitic parent rocks were sampled.

As Adam already stated, NWA 1109 can't be classified as a howardite
as it has no diogenite component. This "missing" diogenitic component
in NWA 1109 is * o r t h o p y r o x e n e * - the primary mineral of typical
diogenites.

Bernd
Received on Wed 26 May 2004 04:29:32 PM PDT