General Area Quarries: Fossil Hunting in Racine County, Wisconsin

Updated June 2026

General Area Quarries is a mapped rockhounding spot in Racine County, Wisconsin. Reported finds include crinoid, trilobite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Racine County
State: Wisconsin
Nearest road: Mamerow Lane
Postcode: 53185
Coordinates: 42.77553, -88.25147

Geology at General Area Quarries

This spot sits on ground mapped as Kankakee Equivalent 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: Kankakee Equivalent
Age: 445–420 Ma (Silurian)
Elevation: 840 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 General Area Quarries

Best months: April to November. Typical highs run 82°F in midsummer and 29°F in midwinter, with winter lows near 11°F.

Climate normals: NOAA 1991-2020 monthlies, ROCHESTER WWTP station (4 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 General Area Quarries

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 General Area Quarries.

Across the state line from General Area Quarries

General Area Quarries 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.

General Area Quarries FAQ

Where is General Area Quarries?+

General Area Quarries is in Racine County, Wisconsin, at 42.77553, -88.25147. Nearest road: Mamerow Lane.

What rocks and minerals can you find at General Area Quarries?+

General Area Quarries is reported to produce Crinoid, Trilobite.

Is collecting allowed at General Area Quarries?+

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 General Area Quarries?+

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 General Area Quarries?+

The most comfortable months at General Area Quarries are April to November.

How do I get to General Area Quarries?+

Open the directions link to navigate to 42.77553, -88.25147 in Google Maps. The nearest road is Mamerow Lane.

More rockhounding in Wisconsin

See all 92 Wisconsin spots →

Open General Area Quarries on the map

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