🪨 Chalcedony
Microcrystalline quartz found in many varieties including agate, jasper, and petrified wood. Widespread throughout the US in volcanic and sedimentary rocks.
Best Places to Find Chalcedony
Saddle Mountain
Tonopah, Arizona · BLM Land
Famous fire agate collecting area. Fire agates display brilliant iridescent colors. Requires careful chipping to find the best specimens.
Opal Basin
Wikieup, Arizona · BLM Land
BLM area known for beautiful agate, chalcedony, and common opal. Good beginner-friendly rockhounding in the Arizona desert.
Nebraska River Gravel Pits
Scottsbluff, Nebraska · Public Land
Platte River and Niobrara River gravels produce prairie agates, chalcedony, and petrified wood. Good after rain when fresh material is exposed.
Kansas Jasper & Chalcedony Beds
Goodland, Kansas · Public Land
Western Kansas gravel pits and exposures producing colorful jasper, chalcedony, and agate specimens.
Graveyard Point Agate Beds
Van Horn, Texas · BLM Land
BLM area in far west Texas known for beautiful agate and chalcedony specimens.
Black Warrior River Sites
Tuscaloosa, Alabama · Public Land
Mines and pits along the Black Warrior River between Brookwood and Peterson in Tuscaloosa County. Produces agate, chalcedony, fossils, jasper, kyanite...