Where to Find Thomsonite in Minnesota
3 mapped thomsonite rockhounding spots in Minnesota, across 2 counties. Thomsonite is reported at multiple rockhounding spots across the United States.
Map of 3 thomsonite rockhounding spots in Minnesota
Thomsonite by county in Minnesota
Counties ranked by number of thomsonite spots in our database.
Every thomsonite spot in Minnesota
Sorted by county. Coordinates open in Google Maps. Click a row for details.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Grand MaraisHarbor View Trail | Cook County |
| 47.7446, -90.3531 | Public |
| Beaver BayClub Road | Lake County | 47.2573, -91.2958 | Public | |
| Little Marais RiverMN 61 | Lake County |
| 47.4144, -91.0993 | Public |
Thomsonite in Minnesota FAQ
Where can I find thomsonite in Minnesota?+
RockHoundR tracks 3 thomsonite spots in Minnesota, spread across 2 counties. The strongest concentration is in Lake County.
Is collecting thomsonite legal in Minnesota?+
Casual hand collection of common rocks and minerals like thomsonite is allowed on most BLM and U.S. Forest Service land in Minnesota, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.
What is the best thomsonite location in Minnesota?+
Lake County has the most thomsonite spots in our database for Minnesota. The full county breakdown is below — different counties produce different qualities and varieties.
Other states for thomsonite
Hunt thomsonite in Minnesota on the map
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