A recent image ... shows a shiny, metallic ... object protruding out of a rock. The image was taken on January 30, 2013, by Curiosity’s Mastcam ...
... it appears to be a piece of iron, that hasn’t been oxidized ...
... it’s ... around 0.5 cm tall ...
http://planetsave.com/2013/02/07/nas...ooking-object/