PIA17953: Microtunnels in Yamato Meteorite From Mars
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Original Caption Released with Image:

This scanning electron microscope image of a polished thin section of a meteorite from Mars shows tunnels and curved microtunnels. The clay mineral iddingsite is present in this meteorite, named Yamato 000593, which was found in Antarctica in 2000 and identified as originating from Mars. The scale bar at lower left is 2 microns.

Image Credit:
NASA

Image Addition Date:
2014-02-27