AW: WG: [meteorite-list] Classification question

From: David Weir <dgweir_at_meteoritecentral.com>
Date: Thu May 13 03:55:54 2004
Message-ID: <40A329CC.1C68902_at_earthlink.net>

J?rn Koblitz wrote:
>
> Correct. It simply mean that no finer classification has been done. It's just a bit more work to get the subtype classification. A 3.0 is actually the most primitive, most unequilibrated and rarest type of unequilibrated ordinary chondrite.
>
> BTW: A petrologic type 2 has never been assigned to any ordinary chondrite. Only to carbonaceous chondrites.
>
> J?rn

Hi J?rn,

It was proposed in a paper I read a while back that Semarkona may be
consistent with a petrographic type 2 classification due to aqueous
alteration. I guess it's possible.

David
Received on Thu 13 May 2004 03:54:52 AM PDT