re: MSNBC article on the topic
[I don't think these things can all be waved away as "anomalist garbage" or "eye-squinting and wishing" - even if the features pointed out are not fossils, they are unusual enough to warrant further thought and some hypotheses as to their formation.]
This is true. That suspended spherule-on-a-stick is new to me! Made me wonder about the 'dissolved' crystal impressions.
Spirit has found traces of Carbonates at Gusev. Has Opportunity found Carbonates at Meridiani?
Thanks, LJ & Buck.