Bergen Hill by Hudson River: Banded Agate & Albite Rockhounding in Hudson County, New Jersey

Plan your visit

Permission required before collecting

County

Hudson County

State

New Jersey

Nearest road

New Jersey Turnpike Newark Bay Extension

Postcode

07303

Coordinates

40.71079, -74.05428

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

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.

Best time to visit Bergen Hill by Hudson River

Comfortable months (45 to 90°F highs)

Best months: March to November. Typical highs run 87°F in midsummer and 39°F in midwinter, with winter lows near 25°F.

Climate normals: NOAA 1991-2020 monthlies, HARRISON station (6 mi away).

Geology at Bergen Hill by Hudson River

This spot sits on Stockton Formation, mapped as siltstone mudstone that formed roughly 160 to 145 million years ago. Tough silica like agate, jasper, and chert typically weathers out of beds like these and collects as float in drainages and on deflation surfaces.

Mapped unit

Stockton Formation

Age

160–145 Ma (Late Jurassic)

Rock types

siltstone mudstone

Elevation

10 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

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.

• New Jersey Geological and Water Survey
• Monmouth County Park System, fossil collecting rules
• Sterling Hill Mining Museum
• Community submissions reviewed against published agency rules