Where to Find Lake Superior Agate in the United States
52 mapped lake superior agate spots across 6 U.S. states. Lake Superior agate is a banded chalcedony eroded out of basaltic flows around the Lake Superior basin. Found in Minnesota, Wisconsin, and Michigan, it is the official state gemstone of Minnesota and a beach-walking favorite.
Map showing where to find lake superior agate across the United States, with 52 mapped spots
Top states for lake superior agate
States ranked by number of lake superior agate spots in our database. States in bold link to a focused lake superior agate-in-state list.
Every lake superior agate spot we track
Sorted by state and county. Coordinates open in Google Maps.
Lake Superior Agate rockhounding FAQ
Where is the best place to find lake superior agate in the U.S.?+
Minnesota, Iowa, Wisconsin have the highest concentrations of lake superior agate in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many lake superior agate rockhounding spots does RockHoundR track?+
52 mapped spots across 6 states. The app keeps these on a map alongside your private finds.
Can I legally collect lake superior agate on public land?+
Casual hand collecting of common rocks and minerals like lake superior agate is allowed on most BLM and U.S. Forest Service land, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always check with the managing agency before a trip.
How do I identify lake superior agate in the field?+
Field identification of lake superior agate comes down to color, hardness, fracture, and luster. The RockHoundR app links to geology details for each spot to help narrow down what you might be picking up.
Hunt lake superior agate on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
