Rockhounding in Franklin County, Pennsylvania

2 mapped rockhounding spots in Franklin County. Most commonly produces agate, garnet, jasper.

Franklin County rockhounding photos

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

1 photo

The entrance to Caledonia State Park in Franklin County, Pennsylvania — Area Around Caledonia State ParkFranklin County, Pennsylvania

Minerals reported in Franklin County

Standout in Franklin County

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

Top pick
Area Around Caledonia State Park
Public
Franklin County
The ridges of Michaux country around Caledonia in Franklin County shed agate and jasper into local streams and float, a byproduct of the region's iron-rich Blue Ridge geology. It offers scenic, forested collecting for colorful lapidary material. This is a well-loved south-central Pennsylvania hunting ground.
Agate, Jasper

Spots in Franklin County

Spot	Minerals	Coordinates	Access
Area Around Caledonia State ParkChambersburg Water Line Trail	Agate Jasper	39.9120, -77.4984	Public
Fox HillTarman Spring Road	Garnet	39.8128, -77.5514	Public

Neighboring counties in Pennsylvania

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

Across the state line from Franklin 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 Pennsylvania.

Franklin County FAQ

Where can I rockhound in Franklin County, Pennsylvania?+

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

What rocks and minerals are common in Franklin County?+

Spots in Franklin County most often produce Agate, Garnet, Jasper. Individual spots can vary widely.

Are these Franklin 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 Franklin County rockhounding trip

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