Rockhounding in Gloucester County, New Jersey

5 mapped rockhounding spots in Gloucester County. Most commonly produces amber, fossils.

Gloucester County rockhounding photos

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

1 photo

Jean and Ric Edelman Fossil Park at Rowan University, viewed from the dig site and hiking trail overlook, in Mantua Township, Gloucester County, New Jersey — Jean & Ric Edelman Fossil ParkGloucester County, New Jersey

Minerals reported in Gloucester County

Standout in Gloucester County

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

Top pick
Jean & Ric Edelman Fossil Park
Public
Gloucester County
The Jean and Ric Edelman Fossil Park preserves a former marl quarry whose bone bed sits right at the 66-million-year-old end-Cretaceous extinction boundary. Its beds have produced more than 100,000 fossils across 100-plus species, including shark teeth, marine crocodiles, sea turtles, and mosasaurs. Run by Rowan University, it is the only active public community-dig fossil quarry east of the Mississippi.
Amber, Fossils

Spots in Gloucester County

Spot	Minerals	Coordinates	Access
Bridgeport & Gibbstown	Amber	39.8310, -75.3072	Public
Chestnut CreekWenonah Avenue	Amber	39.7888, -75.1605	Public
HarrisonvilleLake Street	Amber	39.6821, -75.2677	Public
Jean & Ric Edelman Fossil ParkVeterans Memorial Highway	Amber Fossils	39.7622, -75.1274	Public
Mullica HillMullica Hill Road	Amber Fossils	39.7331, -75.2202	Public

Neighboring counties in New Jersey

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

Across the state line from Gloucester 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.

Gloucester County FAQ

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

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

What rocks and minerals are common in Gloucester County?+

Spots in Gloucester County most often produce Amber, Fossils. Individual spots can vary widely.

Are these Gloucester 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 Gloucester County rockhounding trip

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