[meteorite-list] Polujamki and Markovka H4 chondrites: unofficially paired?

From: Thaddeus Besedin <endophasy_at_meteoritecentral.com>
Date: Wed, 20 Dec 2006 03:18:30 -0800 (PST)
Message-ID: <220109.95730.qm_at_web62509.mail.re1.yahoo.com>

 
  I have cut/polished specimens, purchased from Finland, of Polujamki and Markovka. They fell within kilometers of each other and share all macroscopic petrographic features except for one striking difference: 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. 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 stone have been bimodally segregated, 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 Wed 20 Dec 2006 06:18:30 AM PST