Within the Nintendo 3DS title Animal Crossing 3DS you will be able to dig up dinosaur fossils and emeralds now. This has been confirmed by the Animal Crossing 3DS Twitter account:
“Good afternoon everyone! I came across a way to search for fossils this morning! You can have the fossils you find analyzed at the museum. You can then donate them, sell them at the store or to others, to mention a few things you can do but recently collecting dinosaur fossils and turning them into miniatures is popular!
E… Everyone! Here’s some new! An emerald was just dug up in town!! There’s even indisputable photographic evidence! It seems like there are minerals in addition to fossils sleeping under our feet… There’re all kinds of secrets in town!”