Perry County: Flint Nodules Rockhounding in Perry County, Ohio

Quick details

Access

Public area

County

Perry County

State

Ohio

Postcode

43764

Coordinates

39.73259, -82.15055

Geology at Perry County

This spot sits on Conemaugh Group, mapped as shale, siltstone, and mudstone that formed roughly 325 to 300 million years ago. Sedimentary rock like this erodes unevenly, so the most productive collecting is typically along fresh cuts, badland slopes, and active drainages.

Mapped unit

Conemaugh Group

Age

325–300 Ma (Pennsylvanian)

Rock types

shale, siltstone, and mudstone

Elevation

990 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 Perry County

Best months: March to November. Typical highs run 83°F in midsummer and 37°F in midwinter, with winter lows near 17°F.

Climate normals: NOAA 1991-2020 monthlies, NEW LEXINGTON 2 NW station (3 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 Perry County

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

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