[meteorite-list] Half-baked asteroids have Earth-like crust

From: bernd.pauli at paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: 09 Jan 2009 13:36:32 UT
Message-ID: <DIIE.000000A2000037A7_at_paulinet.de>

"...these meteorites are ancient asteroid fragments consisting of feldspar-rich
rock called andesite. Similar rocks were previously known only from Earth,
making these samples the first of their kind from elsewhere in the Solar System.
..The light-colored meteorites, designated GRA 06128 and GRA 06129, were
immediately recognized as being different from previously known meteorites."


See also:

WYATT M.B. et al. (1999) Recognizing andesites on the SNC parent body:
Mineralogy from Mars Global Surveyor (MAPS 34-4, 1999, A123).

WYATT M.B. et al. (2001) An alternative hypothesis for basalt and andesite
on Mars: Global surface compositions from MGS-TES (MAPS 36-9, 2001, A226).

WYATT M.B. et al. (2002) Spectral evidence for weathered basalt as an alternative
to andesite in the northern lowlands of Mars (Nature, vol. 417, p. 263-266).


Best wishes,

Bernd
Received on Fri 09 Jan 2009 08:36:32 AM PST