Rockhounding in Hunterdon County, New Jersey

5 mapped rockhounding spots in Hunterdon County. Most commonly produces axinite, datolite, actinolite, braunite.

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Every rockhounding spot in Hunterdon County

Best spotRiegelsvilleHunterdon County, New JerseyPublic access · Jasper, Quartz
Mt. GilboaHunterdon County, New JerseyPublic access · Axinite, Prehnite, Epidote +4
Goat HillHunterdon County, New JerseyPermission required · Pectolite, Stilpnomelane
Lambertville QuarryHunterdon County, New JerseyPublic access · Axinite, Datolite
ClintonHunterdon County, New JerseyPublic access · Braunite

Hunterdon County rockhounding photos

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

1 photo

The Riegelsville Bridge over the Delaware River at Riegelsville, Hunterdon County, New Jersey — RiegelsvilleHunterdon County, New Jersey

Minerals reported in Hunterdon County

Standout in Hunterdon County

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

Top pick
Riegelsville
Public access
Hunterdon County
The Delaware River gravel bars near Riegelsville carry a rounded mix of jasper, quartz, and chalcedony pebbles washed down from Appalachian and Piedmont bedrock upstream.
Jasper, Quartz

Neighboring counties in New Jersey

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

Across the state line from Hunterdon 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 New Jersey.

Hunterdon County FAQ

Where can I rockhound in Hunterdon County, New Jersey?+

RockHoundR tracks 5 rockhounding spots in Hunterdon County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Hunterdon County?+

Spots in Hunterdon County most often produce Axinite, Datolite, Actinolite, Braunite, Epidote. Individual spots can vary widely.

Are these Hunterdon 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 Hunterdon County rockhounding trip

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