[meteorite-list] Achondrite clasts

From: Bernd Pauli HD <bernd.pauli_at_meteoritecentral.com>
Date: Thu Apr 22 10:00:06 2004
Message-ID: <3D2C27CF.83509629_at_lehrer.uni-karlsruhe.de>

Frank Cressy wrote:

> After reading Adam Hupe's interesting description of NWA904,
> the "collection-in-a-slice" meteorite (actually a regolith breccia),
> I was wondering how common achondrite clasts were in chondrite
> breccias. Can someone (Bernd) give us a few references on these
> exotic clasts that have already been described?


Hello Frank and List,

Here are a few references:

LEITCH C.A. et al. (1977) Lithic clasts in the Supuhee
chondrite (Meteoritics 12, 1977, 125-139).

ZOLENSKY M.E. et al. (1989) CI1, CI2 and CM2 clasts
in the Bholghati howardite and the Al Rais chondrite
(abs. Lun. Plan. Sci. 20, 1247-1248).

BISCHOFF A.K. et al. (1993) Mineralogy, chemistry, and noble gas
contents of Adzhi-Bogdo - an LL3-6 chondritic breccia with L-chondritic
and granitoidal clasts (Meteoritics 28, 1993, 570-578):

"The polymict breccia contains various types of clasts, some of which
are of foreign origin. Components of the breccia include chondrules,
melt rock clasts (some of which are K-rich), highly recrystallized rock
fragments ('granulites'), breccia clasts, pyroxene-rich fragments with
a c h o n d r i t i c textures, and alkali-granitoids."

ZOLENSKY M.E. et al. (1993) Mineralogy of dark clasts in primitive
vs. differentiated meteorites (abs. Lun. Plan. Sci. 24, 1583-1584).

BRIDGES J.C. et al. (1994) An Achondrite Clast in Parnallee
with Possible Links to Ureilites (Meteoritics 29-4, 1994, A449).

BRIDGES J.C. et al. (1995a) A feldspar-nepheline achondrite
clast in Parnallee (Proc. NIPR Symp. Antarct. Meteor. 8, 195-203).

ZOLENSKY M.E. et al. (1996) Mineralogy of carbonaceous chondrite
clasts in howardites, eucrites, and the Moon (Meteoritics 31, 518-537).

BRIDGES J.C. et al. (1997) A survey of clasts and large chondrules
in ordinary chondrites (Meteoritics 32-3, 1997, 389).


Best regards,

Bernd
Received on Wed 10 Jul 2002 08:25:51 AM PDT