From: plethora@pinatas.com   
      
   "Brian C"  wrote in message   
   news:123b51f7.0402280828.3ba63463@posting.google.com...   
   > See half donut shaped feature on Sol 54 Spirit microscope images   
   >   
   > Has anyone any ideas what this feature is - looks like nothing I've   
   > ever seen - looks as thogh it's a tube like structure with a piece of   
   > wall broken away - is this a result of RAT activity or are we seeing   
   > an unatered feature ?   
      
   It's a picture taken after they pressed the Mössbauer spectrometer's contact   
   plate into the soil.  If you look at the pictures taken right before it,   
   they are from exactly the same spot, but before the indentation was made.   
   This has been done several times before, though I think this is one of the   
   more dramatic impressions that has been made.  I'm kind of curious about the   
   dark spot at the top right - is that due to a difference in the soil, or   
   something on the plate?  It's hard to tell, but it almost looks like a   
   portion of the pressed down soil was pulled up when the plate was lifted, as   
   if it was stuck to it.   
      
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