Winton: Lake Superior Agate & Evergreen Jasper Rockhounding in Saint Louis County, Minnesota

Updated June 2026

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

Quick details

Access: Public area
County: Saint Louis County
State: Minnesota
Nearest road: State Highway 169
Postcode: 55731
Coordinates: 47.92254, -91.80065

Geology at Winton

This spot sits on Knife Lake Group volcanogenic lithic sandstone, conglomerate, siltstone, graywacke, and slate, mapped as conglomerate sandstone, siltstone, and graywacke that formed roughly 2800 to 2500 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: Knife Lake Group volcanogenic lithic sandstone, conglomerate, siltstone, graywacke, and slate
Age: 2800–2500 Ma (Neoarchean)
Rock types: conglomerate sandstone, siltstone, and graywacke
Elevation: 1,310 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 Winton

Best months: April to October. Typical highs run 77°F in midsummer and 17°F in midwinter, with winter lows near -3°F.

Climate normals: NOAA 1991-2020 monthlies, ELY station (2 mi away), adjusted for elevation.

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 Winton

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

Nearby rockhounding spots

Other rockhounding spots within driving distance of Winton.

Winton FAQ

Where is Winton?+

Winton is in Saint Louis County, Minnesota, at 47.92254, -91.80065. Nearest road: State Highway 169.

What rocks and minerals can you find at Winton?+

Winton is reported to produce Lake Superior Agate, Evergreen Jasper.

Is collecting allowed at Winton?+

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 Winton?+

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 Winton?+

The most comfortable months at Winton are April to October.

How do I get to Winton?+

Open the directions link to navigate to 47.92254, -91.80065 in Google Maps. The nearest road is State Highway 169.

More rockhounding in Minnesota

See all 49 Minnesota spots →

Open Winton on the map

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