[meteorite-list] Recognizing E-chondrites

From: Matson, Robert D. <ROBERT.D.MATSON_at_meteoritecentral.com>
Date: Mon, 21 Dec 2009 15:11:20 -0800
Message-ID: <7C640E28081AEE4B952F008D1E913F1702651989_at_0461-its-exmb04.us.saic.com>

>From the exterior alone, I would have to agree that an E-chondrite is
almost indistinguishable from an O.C. The one E-chondrite I found in
Nevada looked like a very fresh O.C. -- presumably an H-chondrite based
on the magnetic attraction. Even after cutting a type specimen for
analysis, I was convinced it was a very equilibrated H-chondrite. But
it turned out to be a weathered (W4) EL6 (Roach Dry Lake 030).

So the only anecdotal observational difference that I noted was that
the fusion crust was blacker than that of an ordinary chondrite.

-Rob
Received on Mon 21 Dec 2009 06:11:20 PM PST