Rockhounding in Ozaukee County, Wisconsin

2 mapped rockhounding spots in Ozaukee County. Most commonly produces coral, crinoids, diamond, dolomite.

Ozaukee County rockhounding photos

Representative spot and material photos from this county, shown where verified public image records are available.

1 photo

Historic lime kiln ruins at Lime Kiln Park, Grafton, Ozaukee County, Wisconsin — Lime Kiln ParkOzaukee County, Wisconsin

Minerals reported in Ozaukee County

Coral1
Crinoids1
Diamond1
Dolomite1
Fossils1

Standout in Ozaukee County

Hand-picked spot in Ozaukee County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Lime Kiln Park
Public
Ozaukee County
Lime Kiln Park near Grafton preserves two small Silurian reefs in the walls of a former limestone quarry along the Milwaukee River. The Field Museum records favositid and halysitid corals, stromatoporoids, brachiopods, and nautiloid cephalopods in the exposed dolomite. The park is a free Ozaukee County facility with interpretive trails through the old quarry and kiln ruins.
Fossils, Coral, Crinoids, Dolomite

Spots in Ozaukee County

Spot	Minerals	Coordinates	Access
Lime Kiln ParkGreen Bay Road	Fossils Coral Crinoids Dolomite	43.3225, -87.9440	Public
SaukvilleWest Acacia Drive	Diamond	43.3620, -87.9539	Public

Neighboring counties in Wisconsin

Adjacent rockhounding counties, ranked by how close their centroids sit to Ozaukee County. A natural extension if Ozaukee County is already on your trip plan.

Across the state line from Ozaukee County

Rockhounding counties in neighboring states within driving range. Geology rarely respects state borders — these are often the closest mapped spots you can reach without going deeper into Wisconsin.

Oceana County~79 miMichigan · 1 spotTop: Agate, Fossils, Petoskey Stones

Ozaukee County FAQ

Where can I rockhound in Ozaukee County, Wisconsin?+

RockHoundR tracks 2 rockhounding spots in Ozaukee County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Ozaukee County?+

Spots in Ozaukee County most often produce Coral, Crinoids, Diamond, Dolomite, Fossils. Individual spots can vary widely.

Are these Ozaukee County rockhounding spots on public land?+

Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.

Plan a Ozaukee County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.