Opportunity sniffed, poked, prodded and looked very closely at the rock on Mars and has determined that this is a meteorite. The meteorite now named "Block Island" is about the size of a watermelon (not the square Japanese type!) and has just been sitting there on the ground for who knows how long. It is a common iron/nickel meteorite. I once saw one similar sized to this one for sale at a star party swap meet. Whoever could afford it and take it home could have it! I forget the selling price on it, but it must have weighed almost 200 lbs. I wiggled it a bit, but couldn't lift it.