The area surrounding Green River and in Emery County boasts a large variety of fossils including plants, ammonites, and oysters. Agates are also quite abundant in certain rock units as well as a variety of interesting minerals.
There are many different laws in place regarding the collection of rocks and minerals from public areas, so it is advisable to read up on local laws before prospecting. Rock and mineral collecting is prohibited in most if not all national parks in the United States.
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