Rockhounding in Dawson County, Montana

3 mapped rockhounding spots in Dawson County. Most commonly produces montana agate, agate, jasper, moss opal.

Dawson County rockhounding photos

Representative spot and material photos from this county, shown where verified public image records are available.

1 photo

Polished Montana moss agate with dendritic inclusions from a Yellowstone River gravel bar, the signature agate found near Glendive, Dawson County, Montana — GlendiveDawson County, Montana

Minerals reported in Dawson County

Montana Agate2
Agate1
Jasper1
Moss Opal1

Standout in Dawson County

Hand-picked spot in Dawson County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Glendive
Public
Dawson County
Glendive sits in eastern Montana's Yellowstone River agate belt, where gravel bars and nearby breaks are known for agate, jasper, and petrified-wood style silica material. The site earns its place because it represents the downstream end of the Montana agate story, where long river transport has already sorted and rounded much of the collectible material.
Agate, Jasper, Moss Opal

Spots in Dawson County

Spot	Minerals	Coordinates	Access
Cracker Box CreekRoad 253	Montana Agate	46.9131, -104.9209	Public
GlendiveI 94	Agate Jasper Moss Opal	47.1149, -104.6650	Public
Sand Creek	Montana Agate	46.9279, -104.8178	Public

Neighboring counties in Montana

Adjacent rockhounding counties, ranked by how close their centroids sit to Dawson County. A natural extension if Dawson County is already on your trip plan.

Prairie County~19 mi3 spotsTop: Montana Agate, Chalcedony, Jasper

Dawson County FAQ

Where can I rockhound in Dawson County, Montana?+

RockHoundR tracks 3 rockhounding spots in Dawson County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Dawson County?+

Spots in Dawson County most often produce Montana Agate, Agate, Jasper, Moss Opal. Individual spots can vary widely.

Are these Dawson County rockhounding spots on public land?+

Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.

Plan a Dawson County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.