Saxon Harbor County Park: Lake Superior Agate & Jasper Rockhounding in Iron County, Wisconsin

Plan your visit

Generally open to casual rockhounding

County

Iron County

State

Wisconsin

Nearest road

County Highway A

Postcode

54559

Coordinates

46.56360, -90.42970

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Access note: Saxon Harbor County Park (Iron County) has signed rock-picking beaches on either side of the harbor entrance, and collecting loose stones by hand is permitted. Reach it from County Highway A north of Saxon. Water levels and storms control how much fresh gravel is exposed.

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.

Best time to visit Saxon Harbor County Park

Comfortable months (45 to 90°F highs)

Best months: April to October. Typical highs run 80°F in midsummer and 23°F in midwinter, with winter lows near 7°F.

Climate normals: NOAA 1991-2020 monthlies, SAXON 1WSW station (5 mi away), adjusted for elevation.

Geology at Saxon Harbor County Park

This spot sits on Keweenawan Supergroup: Freda Sandstone, mapped as arkose that formed roughly 1600 to 1000 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

Keweenawan Supergroup: Freda Sandstone

Age

1600–1000 Ma (Mesoproterozoic)

Rock types

arkose

Elevation

590 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.

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.

• Wisconsin Geological and Natural History Survey
• Wisconsin DNR property rules
• Chequamegon-Nicolet National Forest
• Community submissions reviewed against published agency rules