Fox Hill: Garnet Rockhounding in Franklin County, Pennsylvania

Quick details

Access

Public area

County

Franklin County

State

Pennsylvania

Nearest road

Tarman Spring Road

Postcode

17268

Coordinates

39.81282, -77.55139

Geology at Fox Hill

This spot sits on Tomstown Formation, mapped as dolostone that formed roughly 540 to 485 million years ago. Carbonate rock like this dissolves and weathers readily, so fresh road cuts, quarries, and creek exposures are typically the most productive ground.

Mapped unit

Tomstown Formation

Age

540–485 Ma (Cambrian)

Rock types

dolostone

Elevation

1,200 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 Fox Hill

Best months: March to November. Typical highs run 82°F in midsummer and 37°F in midwinter, with winter lows near 22°F.

Climate normals: NOAA 1991-2020 monthlies, S MTN station (4 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 Fox Hill

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

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