Washington Crossing State Park — Rockhounding in Mercer County, New Jersey

Washington Crossing State Park is a mapped rockhounding spot in Mercer County, New Jersey. Reported finds include black jasper. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Mercer County
State: New Jersey
Nearest road: Blue Dot Trail
Postcode: 08560
Coordinates: 40.30935, -74.86421

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.

Found at Washington Crossing State Park

Each chip links to all spots in the U.S. that produce that material.

Black Jasper

Nearby rockhounding spots

Other rockhounding spots within driving distance of Washington Crossing State Park.

Washington Crossing State Park FAQ

Where is Washington Crossing State Park?+

Washington Crossing State Park is in Mercer County, New Jersey, at 40.30935, -74.86421. Nearest road: Blue Dot Trail.

What rocks and minerals can you find at Washington Crossing State Park?+

Washington Crossing State Park is reported to produce Black Jasper.

Is collecting allowed at Washington Crossing State Park?+

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 Washington Crossing State Park?+

Open the directions link to navigate to 40.30935, -74.86421 in Google Maps. The nearest road is Blue Dot Trail.

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