[meteorite-list] Info on Sikhote Alin's shrapnel

From: debfred at att.net <debfred_at_meteoritecentral.com>
Date: Tue, 17 Nov 2009 20:08:45 +0000
Message-ID: <111720092008.3347.4B0302CD0004077800000D1322243322829B0A02D29B9B0EBF0B0A9D000D0A0B_at_att.net>

  Darren, I just looked at 119 individual pieces of shrapnel fragments under a microscope. They are rather small and range in size from 30 grams to less than one gram. It looks to me that every one of them shows some feature of melting. many have roll over rims, melted grooves, fusion crust with impact pits, bubbly crust on backside of oriented pieces. I doubt that any of these features were produced by tumbling.
Regards, Fred
-------------- Original message ----------------------
From: Darren Garrison <cynapse at charter.net>
>
> I was under the impression (read it somewhere) that most modern=collected
> Sikhote-Alin fragments are rusty and are cleaned in rock tumblers. If so, could
> not that dull/round formerly sharp edges and make them look "melted"?
> ______________________________________________
> http://www.meteoritecentral.com
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
Received on Tue 17 Nov 2009 03:08:45 PM PST