Montana Agate Shack — Guided Yellowstone River Rockhounding
Montana moss agate and river gravels
Core atlas recordMONTANA CITY ROCKHOUNDING HUB
Billings is the strongest eastern Montana base for Yellowstone River agate country, Pryor Mountain geology and badlands-style fossil research. The useful question is not simply which mineral occurrences are closest, but which nearby records have evidence strong enough for a lawful field trip.
Use these material filters as discovery tools. A material match means the record mentions that mineral, rock or field interest; it does not establish collecting permission.
Ready and Conditional records are shown before Research occurrences. Distance matters, but evidence quality and access status matter more when choosing a field trip.
Montana moss agate and river gravels
Core atlas recordBear Canyon agate, jasper and quartz context
Core atlas recordUranium
USGS research occurrenceChromium
USGS research occurrenceMineral resource occurrence
USGS research occurrenceMolybdenum
USGS research occurrenceMontana moss agate
Core atlas recordGold, Silver, Fluorite
USGS research occurrenceGold, Silver, Fluorite
USGS research occurrenceMolybdenum
USGS research occurrenceGold
USGS research occurrenceGold, Silver, Arsenic, Tungsten, Copper, Lead
USGS research occurrenceTungsten, Gold
USGS research occurrenceTungsten
USGS research occurrencePetrified wood, fossils, rocks
Core atlas recordMinerals, rocks, fossils and natural resources
Core atlas recordRocks, minerals, fossils and gold panning
Core atlas recordCity pages are geographic planning hubs, not permission maps. Before collecting, open the single-location guide and verify the exact land unit, ownership, active claims, closures, collecting method, fees or permits, and the latest responsible-authority information.