Rockhounding in Dunn County, North Dakota

1 mapped rockhounding spot in Dunn County. Most commonly produces knife river flint.

Dunn County rockhounding photos

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

1 photo

The Killdeer Mountains rising beyond the Killdeer Mountain Battlefield historic site, Dunn County, North Dakota — KilldeerDunn County, North Dakota

Minerals reported in Dunn County

Knife River Flint1

Standout in Dunn County

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

Top pick
Killdeer
Public
Dunn County
Killdeer is the seat of Dunn County, the core of the Knife River flint source area, a glossy brown chalcedony that prehistoric knappers quarried and traded across much of the continent.
Knife River Flint

Spots in Dunn County

Spot	Minerals	Coordinates	Access
KilldeerCounty Road 5	Knife River Flint	47.1537, -102.0572	Public

Neighboring counties in North Dakota

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

Dunn County FAQ

Where can I rockhound in Dunn County, North Dakota?+

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

What rocks and minerals are common in Dunn County?+

Spots in Dunn County most often produce Knife River Flint. Individual spots can vary widely.

Are these Dunn 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 Dunn County rockhounding trip

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