[meteorite-list] Biggest Meteorites by Type

From: bernd.pauli at paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: 09 Jun 2010 19:56:17 UT
Message-ID: <DIIE.0000007500004BAE_at_paulinet.de>

Jason wrote:

"...the Bench Crater meteorite, an "Ungrouped C1," weighed less than
0.6 g, though I haven't been able to find a weight for it anywhere online.

Hello Jason and List,

"The Bench Crater meteorite was found during a study of rock fragments in
Apollo 12 soil (the "coarse fines" fraction). It is known only as a single frag-
ment 3mm x 1.5 mm in a thin section of rock fragments. The fragment was
recognized as weird in 1971, but not described until 1976. Bench Crater
resembles a pyrrhotite-rich CM1 clast in the Kaidun breccia - it has the
chemical composition of a CM2 meteorite, but with hydrous silicates
(clays and serpentine) replacing the olivine, pyroxene etc. Bench crater
is the only rock from on the moon that contains water-bearing minerals".
(Allan H. Treiman).


Best wishes,

Bernd
Received on Wed 09 Jun 2010 03:56:17 PM PDT