General Area (Hudson/Passaic): Banded Agate & Albite Rockhounding in Hudson County, New Jersey

Updated June 2026

General Area (Hudson/Passaic) is a mapped rockhounding spot in Hudson County, New Jersey. Reported finds include banded agate, albite, amethyst, analcime, apatite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Hudson County
State: New Jersey
Nearest road: New Street
Postcode: 07002
Coordinates: 40.66343, -74.10993

Geology at General Area (Hudson/Passaic)

This spot sits on Lockatong Formation, mapped as argillite 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: Lockatong Formation
Age: 160–145 Ma (Late Jurassic)
Rock types: argillite
Elevation: -20 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.

Best time to visit General Area (Hudson/Passaic)

Best months: March to December. Typical highs run 87°F in midsummer and 40°F in midwinter, with winter lows near 26°F.

Climate normals: NOAA 1991-2020 monthlies, NEWARK LIBERTY INTL AP station (3 mi away).

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 General Area (Hudson/Passaic)

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 General Area (Hudson/Passaic).

Across the state line from General Area (Hudson/Passaic)

General Area (Hudson/Passaic) 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.

General Area (Hudson/Passaic) FAQ

Where is General Area (Hudson/Passaic)?+

General Area (Hudson/Passaic) is in Hudson County, New Jersey, at 40.66343, -74.10993. Nearest road: New Street.

What rocks and minerals can you find at General Area (Hudson/Passaic)?+

General Area (Hudson/Passaic) is reported to produce Banded Agate, Albite, Amethyst, Analcime, Apatite, Calcite, Datolite, Epidote, Galena, Malachite, Common Opal, Fire Opal, Quartz, Siderite.

Is collecting allowed at General Area (Hudson/Passaic)?+

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.

What tools should I bring to General Area (Hudson/Passaic)?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit General Area (Hudson/Passaic)?+

The most comfortable months at General Area (Hudson/Passaic) are March to December.

How do I get to General Area (Hudson/Passaic)?+

Open the directions link to navigate to 40.66343, -74.10993 in Google Maps. The nearest road is New Street.

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