Wyoming Rockhounding Location Guide & Map
2 · Here are 10 of the best rockhounding sites for rocks and minerals in Wyoming: Fremont County – Agate, Chalcedony, Jasper, Jade. Split Rock – Ruby, ''Sweetwater'' Agate. Sweetwater County – Agate, Quartz crystals, Chert. Rock Springs – Silicified wood, Agate, Jasper. Box Elder Canyon – Geodes, quartz crystals.