Delaware County: Pyrite Rockhounding in Delaware County, Ohio

Quick details

Access

Public area

County

Delaware County

State

Ohio

Nearest road

South Section Line Road

Postcode

43015

Coordinates

40.29143, -83.13051

Geology at Delaware County

This spot sits on Delaware Limestone, mapped as limestone that formed roughly 420 to 360 million years ago. Carbonate rock like this is the classic host for lead, zinc, and fluorite mineralization, which typically follows old cavities and replacement zones.

Mapped unit

Delaware Limestone

Age

420–360 Ma (Devonian)

Rock types

limestone

Elevation

940 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 Delaware County

Best months: March to November. Typical highs run 85°F in midsummer and 35°F in midwinter, with winter lows near 21°F.

Climate normals: NOAA 1991-2020 monthlies, MARYSVILLE station (10 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 Delaware County

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

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