[meteorite-list] Related Meteorite Falls 11 years apart? Both Hammers! Both L6 Olivine-hypersthene

From: Richard Kowalski <damoclid_at_meteoritecentral.com>
Date: Mon, 8 Mar 2010 20:20:39 -0800 (PST)
Message-ID: <233087.81849.qm_at_web113617.mail.gq1.yahoo.com>

--- On Mon, 3/8/10, cdtucson at cox.net <cdtucson at cox.net> wrote:


> Walter,
> Yes,? there are documented strewnfields which prove
> more than one classification does exist within a single
> area. But, Now that Almahatta Sitta has been found to have
> several different classes within one fall it seems to me
> this changes everything.

Yes it does, to a point.

> In fact as you know they were so confused by the
> differences that they tested every single find to be
> absolutely sure they were all from just one fall. I believe
> they decided that they were in fact all from one fall. This
> makes buying and selling Almahatta Sitta a bit tricky
> because you may not actually get the Ureilite you are
> expecting. You may get some other classification all
> together.

Anne Black may have something more to say about this but hasn't seen this post yet. If you buy from her you will know exactly what you are getting, ureilite, enstatite, H5, etc. because each and every fragment of TC3 she sells is being classified.


> In addition there are two distinct irons that have been
> found within the Canyon Diablo strewnfield just to name one
> more. . Nininger refers to the second higher nickel one as
> CD 2,? I believe.

This can be tested by mapping the strewnfields. If they are aligned, it is more likely that different classifications could be from the same body and more testing needs to be accomplish. If the axes are significantly offset, then the two or clearly not related.

--
Richard Kowalski
Full Moon Photography
IMCA #1081
      

Received on Mon 08 Mar 2010 11:20:39 PM PST