[meteorite-list] Polujamki/Markovka pairing: second try

From: Thaddeus Besedin <endophasy_at_meteoritecentral.com>
Date: Thu, 4 Jan 2007 19:27:36 -0800 (PST)
Message-ID: <780160.89422.qm_at_web62515.mail.re1.yahoo.com>

 
  Polujamki and Markovka fell within kilometers of each other and share all macroscopic petrographic features except for two striking differences: Polujamki, in photos I have found and in my specimen, seems to have, almost without exception, a much higher frequency of >3mm pools of coalesced Fe-Ni, as well as relatively more extensive shock veining/brecciation. Is this simply an observation made from a specific paired stone that became available recently? Can the amount of elemental metal dissemination in the original meteoroidal body have been bimodally segregated due to localized shock, contributing to the differences in trajectory of individual fragments of the stone as a result of explosive aerial fragmentation?
   
  _______Total Iron Content__________________________________
    Polujamki: 25.69 %
   http://www.crystalencounters.com.au/poluyamki.html
     Markovka: 25.48%
  http://www.minresco.com/meteor/meteor10.htm
  -Thaddeus
  __________________________________________________

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Received on Thu 04 Jan 2007 10:27:36 PM PST