Rockhounding Map & Sites in Wyoming: 351 Locations for Crystal Hunting, Gem Mining & More
Wyoming Locations
351 locations found in Wyoming
Wyoming has 351 documented rockhounding and rock hunting sites, including locations for Fossils, Copper, and Gold. Whether you're crystal hunting, gem mining, or mineral collecting, most sites are on public land and free to access. Use the interactive map above to filter by mineral type, location type, and find GPS coordinates for each site.
Last updated: — 351 verified locations
Recommended Gear for Wyoming
Estwing E3-22P Rock Pick
The industry-standard 22oz geological hammer. One-piece forged steel with shock-reduction grip.
Clear Anti-Fog Safety Glasses (4 Pack)
Adjustable, anti-fog lenses for clear vision in any conditions. About $5 per pair.
Watertight Medical Kit
Compact, waterproof first aid kit with bandages, moleskin, and field essentials.
Northwest Treasure Hunter's Gem and Mineral Guide
Whether you're digging for the first time or are an experienced rockhound or "prospector," with a simple rock hammer and...
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The Best Rockhounding Sites in Wyoming
Wyoming has 351 rockhounding sites on our interactive map. The most common finds are Fossils, Copper, Gold. Use the map above to filter by specimen type or location type. Each pin includes GPS coordinates, access status, and community-reported finds.
What Minerals & Gems Can You Find in Wyoming?
Wyoming has 103 documented specimen types across 351 sites. Here are the most commonly reported:
Click on any specimen above to see all locations where it can be found in Wyoming.
Best Time for Crystal Hunting in Wyoming
Summer and early fall are best for rockhounding in Wyoming, as winter conditions make many locations inaccessible.
Check current weather and road conditions before heading out, especially for remote BLM and Forest Service roads.
Where to Find Jade (Nephrite) in Wyoming
Wyoming designated nephrite jade as its state gemstone in 1967. The state produces more jade than any other in the US. Nephrite jade occurs in serpentinite bodies in the Wind River Range, the Seminoe Mountains, and the Granite Mountains of central Wyoming. Colors range from dark green to black (the most valued "Wyoming black jade") to lighter olive and cream.
Top sites:
- Jeffrey City / Crooks Gap area, Fremont County — BLM land. Nephrite jade boulders and cobbles in the Granite Mountains. Surface collecting. High-clearance vehicle for access roads.
- Seminoe Mountains, Carbon County — Jade in serpentinite. BLM land. Remote — plan for the drive.
Wyoming nephrite jade is extremely tough — you cannot break it with a hammer (it absorbs the impact and flexes rather than fracturing). Field test: hit a suspected jade boulder with a hammer. If it rings rather than thuds, and does not chip, it is likely nephrite. Color ranges from spinach green to near-black. Test hardness: nephrite is 6-6.5 (will not scratch with a knife blade). Do not confuse with serpentine (softer, scratches with a knife).
Where to Find Fossils in Wyoming
Wyoming is one of the premier fossil states. The Green River Formation (Eocene) produces the world's finest freshwater fish fossils. The Morrison Formation (Jurassic) in northeastern Wyoming and the Hell Creek Formation (Cretaceous) in the Powder River Basin produce dinosaur fossils. The Fossil Butte National Monument near Kemmerer preserves extraordinary Green River Formation specimens.
Top sites:
- Fossil Butte National Monument area, Lincoln County — Collecting is prohibited inside the monument. Adjacent private land quarries operate as fee dig sites. Ulrich's Fossil Gallery and other operators offer guided digs for Green River fish fossils.
- Kemmerer area quarries — Fee dig operations for Eocene fish (Knightia, Diplomystus, Priscacara), stingrays, crocodiles, and plant fossils.
Green River fish fossils are preserved in fine-grained limestone that splits into thin slabs. The most common species is Knightia (a small herring, 2-4 inches). Larger species — Diplomystus, Priscacara, and Mioplosus — are rarer and more valuable. Split the limestone slabs carefully with a thin chisel. The fossils are delicate — once exposed, stabilize with a clear consolidant to prevent flaking.
Where to Find Agate in Wyoming
Wyoming produces several distinctive agate varieties. Sweetwater agate (from the Sweetwater River area in Fremont County) is a banded blue-gray to brown agate. Graveyard Point plume agate occurs along the Idaho-Wyoming border. The volcanic terranes of the Absaroka Range and the Yellowstone Plateau produce jasper and agate in stream gravels.
Top sites:
- Sweetwater River area, Fremont County — Sweetwater agate on BLM land. Surface collecting in gravel deposits and eroded volcanic ash.
- Yellowstone River drainage, Park County — Agate and jasper in river gravels. Public access on BLM and National Forest land outside Yellowstone National Park.
Wyoming agates are typically small to medium (1-4 inches) with subtle banding in earth tones — gray, brown, blue-gray, and cream. Sweetwater agate is translucent with fine banding. It is good lapidary material. Collect from gravel bars and surface deposits on BLM land. Wet stones to evaluate — agates are much more visible when wet than dry.
Wyoming Rockhounding Laws & Public Land Rules
BLM Land
Wyoming has approximately 18 million acres of BLM land. Recreational collecting is allowed for personal, non-commercial use. Gold panning and hand sluicing are permitted under casual use provisions.
National Forests
Collecting is allowed in Wyoming's National Forests (Bighorn, Bridger-Teton, Medicine Bow-Routt, Shoshone) for personal use.
State Parks
Collecting is generally prohibited in Wyoming state parks and historic sites.
Collection Limits
BLM: 25 lbs per day plus one specimen, not to exceed 250 lbs per year.
What's Protected
Yellowstone National Park and Grand Teton National Park prohibit all collecting. Fossil Butte National Monument prohibits collecting. Devils Tower National Monument prohibits collecting. Vertebrate fossils on federal land require a permit. On private land in Wyoming, fossils belong to the surface estate owner.
Wyoming is an excellent rockhounding state with vast BLM access. The central Wyoming jade fields, the Green River fossil quarries, and the Big Horn Basin agate deposits are the primary destinations. Wyoming is high-altitude and arid — altitude sickness, dehydration, and extreme weather are real hazards. Carry extra water and watch for afternoon thunderstorms in summer. Grizzly bears are present in the Yellowstone ecosystem — carry bear spray in northwestern Wyoming.
Official State Rocks, Minerals & Gems of Wyoming
State Gem
Nephrite Jade
State Fossil
Knightia fish
Jade in central WY (Lander area); Knightia fossils abundant at Green River public dig sites.
Gear Checklist for Rock Hunting & Gem Mining in Wyoming
What you need depends on the terrain and what you are collecting. Here is a general checklist for Wyoming:
- Rock hammer (3 lb crack hammer for hard rock, geologist's pick for softer material)
- Safety glasses — required any time you swing a hammer
- Chisels — cold chisels for splitting seams and extracting crystals
- Bucket and bags — 5-gallon bucket, zip-lock bags for specimens
- GPS device or phone app — cell service is unreliable at most sites
- 1 gallon of water per person — minimum, more in summer
- Sturdy boots — ankle support for loose talus and mine tailings
- Field guide — a regional mineral identification guide for Wyoming
Always respect private property, follow Leave No Trace principles, and check current regulations before collecting. On BLM land, the general rule is 25 lbs per day plus one specimen for personal, non-commercial use.
Wyoming Locations (351)
Rockhounding clubs in Wyoming
Connect with a local gem and mineral society — meetings, field trips, lapidary workshops, and annual shows.
Browse Wyoming clubs →Frequently Asked Questions
What gems, minerals, and crystals can I find in Wyoming?
Wyoming has 103 documented specimen types, including Fossils, Copper, Gold, Malachite, Azurite. Use the interactive map above to filter by specimen and see exactly which minerals are reported at each location.
How many rockhounding sites are mapped in Wyoming?
We have 351 rockhounding sites mapped in Wyoming with GPS coordinates, access info, and community-reported finds. New locations are added regularly through community submissions.
When is the best time to go crystal hunting in Wyoming?
Summer and early fall are best for rockhounding in Wyoming, as winter conditions make many locations inaccessible. Always check current weather and road conditions before heading out, especially for remote collecting sites.
Where can I go gem mining in Wyoming?
Wyoming has 351 mapped locations for gem mining, rock hunting, and mineral collecting. Use the interactive map above to filter by specimen type or location type. Paid dig sites offer a guided experience with tools provided, while public access sites on BLM and Forest Service land are free.
Is rock hunting legal on public land in Wyoming?
Casual rock hunting and mineral collecting is generally allowed on BLM and National Forest land in Wyoming for personal, non-commercial use. The standard BLM limit is 25 lbs per day plus one specimen, not to exceed 250 lbs per year. Always verify regulations for specific sites — national parks, monuments, and some state parks prohibit collecting. See the laws section above for Wyoming-specific rules.
What tools do I need for rockhounding in Wyoming?
Essential rockhounding tools include a rock hammer, safety glasses, chisels, a 5-gallon bucket, zip-lock bags for specimens, a GPS device or phone app, sturdy boots, and a field guide. For Wyoming specifically, check the gear checklist section above for terrain-specific recommendations.
⚠️ Always verify current regulations, weather conditions, and access requirements before visiting any location. Information provided is based on community submissions and may not be current or accurate.