AW: [meteorite-list] Possible Sahara 03500 Paired stone

[Jörn Koblitz]

Dear Steven, Michel and Doug,
 
This is a fairly good picture of the meteorite. I looks to me like a chondrule-poor portion of an ordinary chondrite (L or LL), for example like Ramsdorf (L6-S5), which has large portions without any chondrules as well as the typical chondrule-bearing material (the latter is rare in Ramsdorf). I have also seem such kind of material as clasts in LL chondrites, which sometimes can be cm-size. Keep in mind that some ordinary chondrites don't show any chondrules due to high metamorphism or impact melting.
 
Regarding high-K values due to terrestrial contamination: If this was the case with this stone, it should be reflected also in high levels of other minor and trace elements such as Na, Ba and Sr.
 
There is a nice publication o K-rich lithologies in ordinary chondrites (i.e. Acfer 066, Acfer 160, HaH 060, Adzhi-Bogdo, Jelica, or Krahenberg (all LL chondrites): 
 
Mineralogy and chemical composition of K-rich lithology, A.Jaeckel and A.Bischoff, MAPS, 1997, 32, p.A66 (abs.); see also, MAPS, 1998, 33, p.A77 (abs.)
 
Best regards,
Jörn
_______________________________________________________________________________ 
Joern Koblitz 
MetBase Editor 
The MetBase Library of Meteoritics and Planetary Sciences 
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-----Ursprüngliche Nachricht-----
Von: Steven Drummond [mailto:jesserd44 at earthlink.net]
Gesendet: Mittwoch, 23. Juni 2004 20:28
An: metlist
Betreff: [meteorite-list] Possible Sahara 03500 Paired stone


Hi List,     
              I was going to save this for later but here goes ,   I have what looks like a paired stone to Michel Franco's Sahara 03500  
    But this stone is somewhat different as it shows clearly what looks like chondrules in the darker material. 
 Someone has stated that he thinks Michel's stone is a huge clast, Michel's stone doesn't show any of this chondrule material like my stone does, and if paired with Michel's stone could show the reason why Michel has a problem with his classification .  I am not going to speculate any further on this one, I will leave it up to the Scientists if they so choose to investigate this stone further.  
               
      Anyway here is the link to a huge picture of a 44 gram main mass of my stone that was originally 69 grams. Please excuse the crude web site.
  Scroll down to the large picture .........    http://www.unknowncollector.com/         Any and all comments are welcome .
          
 Best Regards to all   ,       Steven Drummond   

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