Ha
There is no certainty, it is a fact.
Perhaps Benesov meteorite had a double lithology, such as Almahata Sitta?
The weathering grade W3 is not difficult to achieve in humid climates of
Central Europe.
Thank you for your response.
Best
Woreczko
----- Original Message -----
From: "Gary Fujihara" <fuj...@mac.com>
To: "Jan Woreczko - www.meteoritica.eu" <e...@biol.uw.edu.pl>
Cc: <meteorite-list@meteoritecentral.com>
Sent: Tuesday, February 21, 2012 6:04 PM
Subject: Re: [meteorite-list] New Met Bulletin Approvals - new Czech
meteorites
Aloha Jan,
From just a cursory glance at the metbull entry for Benesov (a), I would
surmise a reason for the non-fall classification is due to the fact that
much time had elapsed from the witnessed fireball on May 7, 1991 and the
actual recovery of material on April 9, 2011. Because almost twenty years
had passed, there can be no assurance that the recovered pieces are
associated with the witnessed sightings.
Additionally, Benesov (a) is an LL3.5 and Benesov (b) is an H5 and were
found on the same day 250m apart, both with a weathering grade of W3.
Characteristics are "Weathered fragments lacking fusion crust. The
meteorites resemble the terrestrial stones and slag found in the field." To
me, this implies that the recovered pieces have a terrestrial age greater
than 20 years.
gary
On Feb 21, 2012, at 6:18 AM, Jan Woreczko - www.meteoritica.eu wrote:
Ha
Why are these findings are not classified as a falls?
Benešov (a) http://www.lpi.usra.edu/meteor/metbull.php?code=54854
Benešov (b) http://www.lpi.usra.edu/meteor/metbull.php?code=54855
http://translate.google.pl/translate?sl=pl&tl=en&js=n&prev=_t&hl=pl&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fwiki.meteoritica.pl%2Findex.php5%2FBene%25C5%25A1ov
Best wishes,
Woreczko
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