[meteorite-list] NWA 4441

From: bernd.pauli_at_paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: Fri Aug 4 17:31:52 2006
Message-ID: <DIIE.0000005700000A17_at_paulinet.de>

Steve wrote:

.. thru my loupe,I noticed there are very small metal flecks
.. I thought carbonaceous chondrites had no metal in them.
Is this the correct class?Or am I missing something here?

Dave C. wrote:

As I recall, it's not uncommon for COs to have clearly visible,
small inclusions of free metal that appear like tiny flakes.

NORTON O.R. (1998) Rocks From Space II, p.195:

"The average CO chondrite contains about 6% by weight of metal."


Acfer 332 - CO3 - rare metal grains
Acfer 333 - CO3 - rare metal grains


My Ornans (CO3.4) 1-gram slice also shows minor traces of metal
but, on the whole, nickel-iron is a rare component of CO chondrites!

Best wishes,

Bernd
Received on Fri 04 Aug 2006 05:30:38 PM PDT