[meteorite-list] Chondrite formation & FeNi

From: Bernd Pauli HD <bernd.pauli_at_meteoritecentral.com>
Date: Thu Apr 22 09:48:13 2004
Message-ID: <3BD07B5E.105172C8_at_lehrer1.rz.uni-karlsruhe.de>

Steve Witt wrote:

> why don't we see round and semi-round chrondritic shaped FeNi inclusions in chondrites?

Hello Steve and List,

The CB grouplet of chondrites, which represent the most
primitive, metal-rich chondritic material we presently
have (Bencubbin, Weatherford, HaH 237 and QUE 94411
(paired with QUE 94627), are just such candidates.

M.K.Weisberg et al. even mention "sub-round"
metal clasts in Bencubbin and Weatherford :

WEISBERG M.K. et al. (2001) A new metal-rich chondrite
grouplet - CB chondrites (MAPS 36-3, 2001, pp. 401-418):

" ... Both metal and silicate occur as centimeter
-sized, angular to sub-round, clasts."

Take a look at Serguei Vassiliev's wonderful HaH 237 slice on Martin's
Global Collection page and marvel about the meteorite's round chondrules
which are excessively rich in FeNi!


Best wishes

Received on Fri 19 Oct 2001 03:13:34 PM PDT

Help support this free mailing list:

Yahoo MyWeb