Pennington Mountain — Rockhounding in Mercer County, New Jersey

Pennington Mountain is a mapped rockhounding spot in Mercer County, New Jersey. Reported finds include calcite, celadonite, epidote. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Mercer County
State: New Jersey
Nearest road: Woodsville Road
Postcode: 08525
Coordinates: 40.36165, -74.80631

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 Pennington Mountain

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

Nearby rockhounding spots

Other rockhounding spots within driving distance of Pennington Mountain.

Across the state line from Pennington Mountain

Pennington Mountain is close enough to the New Jersey border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Pennington Mountain FAQ

Where is Pennington Mountain?+

Pennington Mountain is in Mercer County, New Jersey, at 40.36165, -74.80631. Nearest road: Woodsville Road.

What rocks and minerals can you find at Pennington Mountain?+

Pennington Mountain is reported to produce Calcite, Celadonite, Epidote.

Is collecting allowed at Pennington Mountain?+

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. Always confirm current rules with the managing agency before a trip.

How do I get to Pennington Mountain?+

Open the directions link to navigate to 40.36165, -74.80631 in Google Maps. The nearest road is Woodsville Road.

More rockhounding in New Jersey

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Open Pennington Mountain on the map

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