[meteorite-list] Fusion crusts on stony meteorites
From: Pat Brown <radio_ranch_at_meteoritecentral.com>
Date: Fri, 23 Mar 2007 10:25:26 -0700 (PDT) Message-ID: <622717.69221.qm_at_web51304.mail.re2.yahoo.com> Hi All, I bought a slice of this meteorite from Marcin at Tucson. While I am not a professional meteoriticist, I am an engineer heavily involved with failure analysis, use of microscopes and a trained observer. To my eye these are most definitely small bits of this meteorite fractured off of the parent body during transit of the atmosphere and incorporated in the fusion crust, likely on the back side of the meteorite. I had to have this slice the minute that ET pointed out to me this interesting feature! Thanks to ET for the heads up and thanks to Marcin for doing an excellent job of slicing and polishing this meteorite and offering it for sale. Pat --- Darren Garrison <cynapse at charter.net> wrote: > On Thu, 22 Mar 2007 22:05:51 -0700, you wrote: > > >Michael, Darren, Jim and list, > > > >I agree with Jim on this. My slice of the same > stone has fragments set in a > >clearly bubbly melt. I suggest that this > accumulated on the back side of > >the stone during oriented flight. Check out my > pictures: > > > >http://www.johnkashuba.com/Pages/Meteorite%20Pages/Pictures/NWA2826LL5.htm > > This photo does look pretty convincing-- the > triangular fragment in the melt > looks like like a close match to the bigger mass: > > http://www.johnkashuba.com/Images/Meteorite%20Pages/Pictures/NWA2826LL561g at 2400MFOV1cmP800.jpg > ______________________________________________ > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > Received on Fri 23 Mar 2007 01:25:26 PM PDT |
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