Big Horn Canyon — Rockhounding in Big Horn County, Montana
Big Horn Canyon is a mapped rockhounding spot in Big Horn County, Montana. Reported finds include agate, chalcedony, jasper, silicified coral, fossils. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Big Horn Canyon in Big Horn County, Montana
Quick details
- Access
- Public area
- County
- Big Horn County
- State
- Montana
- Nearest road
- Route 211
- Postcode
- 59035
- Coordinates
- 45.31296, -107.96042
Land & collecting status
Generally open to casual rockhounding
Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.
Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.
Sources & verification
Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.
State guidance last verified:
- BLM Montana — Recreational mineral collecting
- Montana Bureau of Mines and Geology
- Gem Mountain Sapphire Mine (fee-dig operator)
- Community submissions reviewed against published agency rules
Found at Big Horn Canyon
Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.
Nearby rockhounding spots
Other rockhounding spots within driving distance of Big Horn Canyon.
- Pryor MountainsTop pick in MontanaBig Horn County, Montana · 16 mi awayFossils, Agate, Chalcedony
- Bear CanyonCarbon County, Montana · 32 mi awayGeode, Agate
- Yellowstone River (Billings area)Top pick in MontanaYellowstone County, Montana · 44 mi awayMontana Agate, Chalcedony, Chert
- FrombergCarbon County, Montana · 47 mi awayCoal, Pyrite
- HyshamTreasure County, Montana · 71 mi awayMoss Agate
- Old Nye Picnic AreaStillwater County, Montana · 94 mi awaySilver
Across the state line from Big Horn Canyon
Big Horn Canyon is close enough to the Montana border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.
- Big Horn RiverBig Horn County, Wyoming · 28 mi awayDry Head Agate
- LovellBig Horn County, Wyoming · 36 mi awayFossils, Ammonites, Dinosaur Bones
- LovellBig Horn County, Wyoming · 40 mi awayGypsum, Fossils
- GreybullBig Horn County, Wyoming · 47 mi awayGastroliths, Petrified Dinosaur Bone, Fossils
- Red GulchBig Horn County, Wyoming · 55 mi awayGypsum
- HyattvilleBig Horn County, Wyoming · 77 mi awayGypsum, Dinosaur Bones, Gastroliths
Big Horn Canyon FAQ
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More rockhounding in Montana
See all 87 Montana spots →Open Big Horn Canyon on the map
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