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Racine: Fossil Hunting in Racine County, Wisconsin

Updated July 2026

Quarry Lake Park in Racine exposes the Silurian Racine Formation dolomite, part of the reef complex recognized as among the first fossil coral reefs described in North America. The reef flank beds here yield crinoid columnals, corals, brachiopods, and bryozoans, documented by the Field Museum and Milwaukee Public Museum reef projects. The park is a public Racine County facility, unlike the active commercial quarries nearby that are closed to collectors. Reported finds include fossils, calcite, marcasite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Racine County
State: Wisconsin
Nearest road: Racine MRK Trail
Postcode: 53402
Coordinates: 42.77393, -87.80830

Geology at Racine

This spot sits on ground mapped as Racine Formation that formed roughly 445 to 420 million years ago. Fossils here are typically found in fresh exposures, where erosion keeps bringing new material to the surface.

Mapped unit: Racine Formation
Age: 445–420 Ma (Silurian)
Elevation: 520 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 Racine

Best months: April to November. Typical highs run 82°F in midsummer and 31°F in midwinter, with winter lows near 17°F.

Climate normals: NOAA 1991-2020 monthlies, RACINE BATTEN AP station (1 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 Racine

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 Racine.

Across the state line from Racine

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

North AuroraKane County, Illinois · 72 mi awayBornite, Calcite, Chalcopyrite

Racine FAQ

Where is Racine?+

Racine is in Racine County, Wisconsin, at 42.77393, -87.80830. Nearest road: Racine MRK Trail.

What rocks and minerals can you find at Racine?+

Racine is reported to produce Fossils, Calcite, Marcasite.

Is collecting allowed at Racine?+

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 Racine?+

A rock hammer, a cold chisel, safety glasses, and newspaper or foam for wrapping finds cover most fossil ground. A trowel and a sieve help in soft exposures.

When is the best time to visit Racine?+

The most comfortable months at Racine are April to November.

How do I get to Racine?+

Open the directions link to navigate to 42.77393, -87.80830 in Google Maps. The nearest road is Racine MRK Trail.

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