Use this resource as a guide to get you started. google_ad_host="pub-6693688277674466"; Obsidian is abundant in Yellowstone, with the most famous location being the Obsidian Cliff, located in the northwest part of the Park. . lol Thanks again! Other sources include: North Carolina Rockhounding Location Guide & Map, Montana Rockhounding Location Guide & Map. google_ad_format="120x600_as"; If opals are something you hope to find, check around Smith Creek. Important Disclaimer: I have not been to these locations myself, and I do not know if they are currently open for collecting. Albany is among the best rock-hounding places in Wyoming since you can find various rocks and minerals. Albany County is in the bottom eastern portion of Wyoming and borders the northern Colorado state line. Sign In. Pegmatite and sedimentary rocks such as bentonite are also found in Johnson County. . We have listed each type of crystal in separate sections since we know how much you love them. While much of the region is difficult to access, a large portion of the land is managed by the National Forest Service and is largely open to the public for collecting. Fossilized leaves near Miles City, MT: 2.) This will be our first time rock hounding Wyoming. I am uploading a couple of pictures that my friend Henri took of me hunting it with his kids. I have created guides for every U.S. state including thousands of rockhounding sites - and continue to add more every day. Rock Hound Etiquette 7. That is partly because of about 50 percent of the state's public land.