Agates, copper minerals, uranium minerals, and calcite-aragonite can be found throughout Park County in northwestern Wyoming. To find petrified wood in Wyoming, you should go northeast of Eden, Sweetwater County, or the Wind River Formation where the Eocene age petrified wood is, 35 miles north of Medicine Bow, near the old Casper road. I found this book very useful and clearly written. The ant hills are basically everywhere if you get out and walk around, and your biggest issue will most likely be needing 44 to get there, and especially across the creek to the north. Geology of WyomingCompile digital bedrock and surficial geologic maps at 1:100,000 scale for the state in order to revise the 1:500,000 scale geologic map of Wyoming and surficial geologic map of Wyoming. If youre looking for individual hiking tracks (rather than single-point GPS data), please see my GaiaGPS page, which is hosted off-site, and is free. Obsidian Cliff is located in the northwest region of Yellowstone. Here you can also find agatized and opalized wood, while agates are common a few miles west of Saratoga. If you explore the highway cut north of Laramie, you might find meteorites. Rainbow agates are located along the Wind River near Riverton, in Fremont County. Though there are many locations listed here, this list is far from exhaustive. You can get an individual or family club membership at a low rate. Speaking of Laramie, you can find in the Laramie Range amphibole, cordierite, epidote, orthoclase and plagioclase minerals, garnet, magnetite, and mica minerals, among many other materials. TIP: A great deal of petrified wood is not suitable for rock tumbling or lapidary work because it has too many faults and fractures. Copyright 2022 Rockhound Resource | Birch on Trellis Framework by Mediavine, Greybull, area washes and draws btwn Big Horn River and Mountains, Lovell, E to Big Horn Mountains in draws and washes, Fremont County, all regional washes and draws. This new version of the guide arranges the sites into counties and regions, with a different chapter for each county. This will be our first time rock hounding Wyoming. WSMGS Affiliated Clubs when planning your visit. google_color_link="000000"; Use caution, be respectful, and play by whatever the rules are now. //-->,