Rockhounding in Campbell County, South Dakota

1 mapped rockhounding spot in Campbell County. Most commonly produces opal, petrified wood.

Campbell County rockhounding photos

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

1 photo

Petrified wood logs weathering out of badlands strata in the northern Great Plains, the kind of fossil wood found in the Missouri River gravels near Mound City — Mound CityCampbell County, South Dakota

Minerals reported in Campbell County

Standout in Campbell County

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

Top pick
Mound City
Permission
Campbell County
The country around Mound City, west toward the Missouri River, is a documented source of petrified and agatized wood, with occasional opal, weathering out of the banks and gravels of the river and its tributaries.
Petrified Wood, Opal

Spots in Campbell County

Spot	Minerals	Coordinates	Access
Mound City	Petrified Wood Opal	45.7206, -100.2372	Permission

Neighboring counties in South Dakota

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

Walworth County~16 mi1 spotTop: Agatized Wood, Opalized Wood

Across the state line from Campbell 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.

Campbell County FAQ

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

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

What rocks and minerals are common in Campbell County?+

Spots in Campbell County most often produce Opal, Petrified Wood. Individual spots can vary widely.

Are these Campbell 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 Campbell County rockhounding trip

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