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- If you\ve correctly identified this, pat yourself on the back.""You\re a certified geology nerd
- This fiery specimen is found only in the Southwestern U.S.""To hunt for its colorful cousins, head to the Oregon coast
- Finding one of these stones large enough to make a teapot is unlikely.""One woman fakes it with clay
- Volcanic rock seems to have a knack for creating wild stone and mineral formations.""Remember these?
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