Minneapolis: Lake Superior Agate Rockhounding in Hennepin County, Minnesota

Updated June 2026

Minneapolis is a mapped rockhounding spot in Hennepin County, Minnesota. Reported finds include lake superior agate. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Hennepin County
State: Minnesota
Nearest road: Luce Line Regional Trail
Postcode: 55405
Coordinates: 44.98241, -93.31709

Geology at Minneapolis

This spot sits on ground mapped as St. Peter Sandstone that formed roughly 470 to 445 million years ago. Tough silica like agate, jasper, and chert typically weathers out of beds like these and collects as float in drainages and on deflation surfaces.

Mapped unit: St. Peter Sandstone
Age: 470–445 Ma (Middle Ordovician to Late Ordovician)
Elevation: 820 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Minneapolis

Best months: April to October. Typical highs run 83°F in midsummer and 21°F in midwinter, with winter lows near 8°F.

Climate normals: NOAA 1991-2020 monthlies, LOWER ST ANTHONY FALLS station (3 mi away).

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Minneapolis

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Lake Superior Agate Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Minneapolis.

Across the state line from Minneapolis

Minneapolis is close enough to the Minnesota border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Minneapolis FAQ

Where is Minneapolis?+

Minneapolis is in Hennepin County, Minnesota, at 44.98241, -93.31709. Nearest road: Luce Line Regional Trail.

What rocks and minerals can you find at Minneapolis?+

Minneapolis is reported to produce Lake Superior Agate.

Is collecting allowed at Minneapolis?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Minneapolis?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Minneapolis?+

The most comfortable months at Minneapolis are April to October.

How do I get to Minneapolis?+

Open the directions link to navigate to 44.98241, -93.31709 in Google Maps. The nearest road is Luce Line Regional Trail.

More rockhounding in Minnesota

See all 49 Minnesota spots →

Open Minneapolis on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.