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This is a slice (2.08 grams) of the famous Mendota "meteorwrong" that was found by Joe Kerchner near Mendota Illinois while searching for meteorites. 

At first glance, an uncut Mendota stone looks like a weathered chondrite meteorite.  It is also strongly attracted to a magnet.  So it is no wonder that Joe thought he had found a meteorite.  After polishing a window, the true bizarre nature of this material was revealed and it was apparent that Mendota was not a meteorite.  But, after showing these specimens to veteran dealers and experts, nobody knows what it is exactly.  It could be natural or it could be manmade.  This material is currently under analysis at a lab - and any buyers will be informed what the final lab results are.

Mendota is NOT a meteorite.  It is a "meteorwrong" - which means it looks like a meteorite, but it is not.  Mendota is one of the finest examples of a meteorwrong in existence - it rivals Plutorano and Shirkovsky for the title of most-convincing meteorwrong.  The matrix is resembles a polymict breccia with pseudo-chondrules, clasts, and extensive rivulets of metal that flow throughout the matrix and surround the various inclusions.  It has a greyish-blue overall coloration, with bits of brown, orange, red, white, blue, black and others.   There is so much metal in this material, that is resembles a mesosiderite when turned in the light.  It is very beautiful and there is nothing on the market like it.  If you are a collector of meteorwrongs and imposters, then you must have a Mendota specimen. 

Refer to the photos.  The black centimeter cube is shown for scale and is not included.