Where to Find Agate in Montana
10 mapped agate rockhounding spots in Montana, across 6 counties. Agate is one of the most popular rockhounding targets in the United States. Montana is famous for its sapphires, Yogo and otherwise, and for the Montana moss agate gravels along the Yellowstone River.
Map of 10 agate rockhounding spots in Montana
Agate by county in Montana
Counties ranked by number of agate spots in our database.
Every agate spot in Montana
Sorted by county. Coordinates open in Google Maps. Click a row for details.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Big Horn CanyonRoute 211 | Big Horn County | 45.3130, -107.9604 | Public | |
| Pryor MountainsBad Pass Road | Big Horn County | 45.2386, -108.2675 | Public | |
| Bear CanyonBear Canyon Road | Carbon County | 45.0818, -108.5258 | Public | |
| GlendiveI 94 | Dawson County | 47.1149, -104.6650 | Public | |
| Bakers HoleConservation Lane | Gallatin County | 44.7108, -111.0956 | Public | |
| Mount BlackmoreBlackmore Trail | Gallatin County |
| 45.4447, -111.0035 | Public |
| Jefferson RiverPrimrose Lane | Madison County | 45.6902, -112.2745 | Public | |
| CarbellaRock Creek Road South | Park County | 45.2175, -110.9273 | Public | |
| MinerTom Miner Creek Road | Park County | 45.1918, -110.9271 | Public | |
| Yellowstone RiverMyers Lane | Park County |
| 45.6285, -110.5678 | Public |
Agate in Montana FAQ
Where can I find agate in Montana?+
RockHoundR tracks 10 agate spots in Montana, spread across 6 counties. The strongest concentration is in Park County.
Is collecting agate legal in Montana?+
Casual hand collection of common rocks and minerals like agate is allowed on most BLM and U.S. Forest Service land in Montana, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.
What is the best agate location in Montana?+
Park County has the most agate spots in our database for Montana. The full county breakdown is below — different counties produce different qualities and varieties.
Other states for agate
Hunt agate in Montana on the map
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