Rockhounding in Harding County, South Dakota

1 mapped rockhounding spot in Harding County. Most commonly produces chalcedony, moss agate.

Harding County rockhounding photos

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

1 photo

A polished moss agate showing dark dendritic moss-like inclusions in translucent chalcedony, the prairie moss agate style found in the Little Missouri gravels — Camp CrookHarding County, South Dakota

Minerals reported in Harding County

Standout in Harding County

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

Top pick
Camp Crook
Public
Harding County
The far northwestern corner of South Dakota around Camp Crook produces prairie moss agate and chalcedony in the river gravels of the Little Missouri system, material comparable in style to the well-known Montana moss agate. This locality adds genuine geographic and material breadth well outside the Black Hills agate country.
Moss Agate, Chalcedony

Spots in Harding County

Spot	Minerals	Coordinates	Access
Camp CrookSD Highway 20	Moss Agate Chalcedony	45.5525, -103.9650	Public

Neighboring counties in South Dakota

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

Across the state line from Harding County

Rockhounding counties in neighboring states within driving range. Geology rarely respects state borders — these are often the closest mapped spots you can reach without going deeper into South Dakota.

Crook County~79 miWyoming · 3 spotsTop: Gold, Malachite, Azurite

Harding County FAQ

Where can I rockhound in Harding County, South Dakota?+

RockHoundR tracks 1 rockhounding spot in Harding County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Harding County?+

Spots in Harding County most often produce Chalcedony, Moss Agate. Individual spots can vary widely.

Are these Harding 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 Harding County rockhounding trip

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