[meteorite-list] Meteorite Shale

From: Paul <bristolia_at_meteoritecentral.com>
Date: Wed, 28 Nov 2007 10:11:20 -0800 (PST)
Message-ID: <29928.66228.qm_at_web36207.mail.mud.yahoo.com>

Ron asked:

>I see some Meteorites for sale, especially the
>Willamette Meteorite, listed as Meteorite Shale.
>What exactly is Meteorite Shale?

It is a term used for a highly weathered (terrestrialized) meteorite.
The use of ?shale?, I suspect, came from the tendency of some
highly weathered meteorites, specifically highly oxidized iron
meteorites to develope a layered structure as they weather and
break into subparallel / parallel layers like shale when broken.

The terms ?shale balls? and ?iron shale? is also used for
some highly weathered meteorites.

When Meteorites Get Old
http://www.meteorite-times.com/Back_Links/2005/January/Meteorite_of_Month.htm

Yours,

Paul H.





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Received on Wed 28 Nov 2007 01:11:20 PM PST