[meteorite-list] Sutter's Mill slices question, Impact Melt?

From: Bernd V. Pauli <bernd.pauli_at_meteoritecentral.com>
Date: Thu, 17 May 2012 18:02:29 +0000
Message-ID: <DIIE.0000005C000051B8_at_10.0.100.101>

Hello Steve, Alan and List,

Back from watching the Mundrabilla episode of Steve and Geoff!
Great episode! But let's now move on to Steve's question. Steve
inquired:

"...do carbonaceous chondrites ever have impact melt zones in them?"

According to my database queries, impact melt (clasts) have been found
in Kaidun (CR2)* and in NWA 1814 (CB3a).

*ZOLENSKY M. et al. (2001) Kaidun: A smorgasbord
 of new asteroid samples (MAPS 36-9, 2001, A233).

Shock melts have been found in QUE 94411 (CBb) and HaH 237 (CBb)*:

*MEIBOM A. et al. (2000) Metal/sulfide-ferrous silicate shock melts in
 QUE 94411 and HaH 237: Remains of the missing matrix? (abs. Lunar
 Planet. Sci. 31, abstract #1420, Lunar and Planetary Institute, Houston,
 Texas, USA, CD-ROM).

... and about QUE 99038 (CM2), Kathleen McBride wrote:

"This carbonaceous chondrite has a dark gray to blackish crust, but appears
 to be a m e l t e d g l o b of chondrules spread over the entire exterior
 of the rock" (AMN 24-1, Feb 2001, p. 12).

Cheers,

Bernd
Received on Thu 17 May 2012 02:02:29 PM PDT