[meteorite-list] Silicated Iron vs. Winonaite (cont.)

From: bernd.pauli at paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: 30 Mar 2010 16:09:32 UT
Message-ID: <DIIE.000000C10000480D_at_paulinet.de>

Jeff and Jason kindly wrote:

Thanks so much for that thorough and very interesting summary Bernd.
Indeed - thanks, Bernd for the informative post.


My pleasure, folks!

Hutchison mentions something that may be of interest in this context:

HUTCHISON R. (2004) Meteorites: A Petrologic, Chemical, and Isotopic
Synthesis (Cambridge Planetary Science Series, pp. 506, p. 256):

It is likely that the winonaites cooled faster than the silicates in IAB irons,
which may have been more deeply buried. This is supported by the metallo-
graphic cooling rates of Winona, 200?C/Myr, and IAB irons, 10-50?C/Myr.

So, maybe these metallographic cooling rates can help make a clear(er)
distinction between the two: Silicated IAB's and winonaites.


Cheers and best wishes,

Bernd

To: meteoritekid at gmail.com
    info at meteorites.com.au
    meteorite-list at meteoritecentral.com
Received on Tue 30 Mar 2010 12:09:32 PM PDT