That doesn't seem likely, since there's images from a second camera of a stereo ...

anigbrowl on Feb 9, 2013 | parent | context | favorite | on: Curiosity images strange metallic-looking object o...

That doesn't seem likely, since there's images from a second camera of a stereo pair. The suggestion that it's a fulgerite or offthrow of the landing seem the likliest explanations to me.