Rockhounding in Cook County, Minnesota

4 mapped rockhounding spots in Cook County. Most commonly produces lintonite, chalcocite, chalcopyrite, chlorastrolite.

Map showing 4 rockhounding spots in Cook County, Minnesota

Minerals reported in Cook County

Spots in Cook County

SpotMineralsCoordinatesAccess
Arrowhead ParkNaniboujou Trail47.8150, -90.0508Public
Grand MaraisHarbor View Trail
  • Lintonite
  • Thomsonite
47.7446, -90.3531Public
Pigeon Point48.0030, -89.4972Public
Thomsonite BeachMN 61
  • Chlorastrolite
  • Lintonite
  • Thomsonite Nodules
47.7278, -90.4584Public

Neighboring counties in Minnesota

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

Across the state line from Cook 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 Minnesota.

Cook County FAQ

Where can I rockhound in Cook County, Minnesota?+
RockHoundR tracks 4 rockhounding spots in Cook County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.
What rocks and minerals are common in Cook County?+
Spots in Cook County most often produce Lintonite, Chalcocite, Chalcopyrite, Chlorastrolite, Lake Superior Agate. Individual spots can vary widely.
Are these Cook 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 Cook County rockhounding trip

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

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