Mine Hill (feldspar): Feldspar & Sunstone Rockhounding in Morris County, New Jersey

Updated June 2026

Mine Hill (feldspar) is a mapped rockhounding spot in Morris County, New Jersey. Reported finds include feldspar, sunstone. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Morris County
State: New Jersey
Nearest road: White Trail/Old Dickerson Mine Road
Postcode: 07803
Coordinates: 40.87294, -74.61058

Geology at Mine Hill (feldspar)

This spot sits on Biotite-quartz-oligoclase gneiss, mapped as biotite gneiss that formed roughly 1600 to 1000 million years ago. Metamorphic belts like this often host pegmatite dikes, the coarse-crystal bodies that typically carry beryl, tourmaline, and sheet mica.

Mapped unit: Biotite-quartz-oligoclase gneiss
Age: 1600–1000 Ma (Mesoproterozoic)
Rock types: biotite gneiss
Elevation: 870 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.

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 Mine Hill (feldspar)

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 Mine Hill (feldspar).

Across the state line from Mine Hill (feldspar)

Mine Hill (feldspar) 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.

Mine Hill (feldspar) FAQ

Where is Mine Hill (feldspar)?+

Mine Hill (feldspar) is in Morris County, New Jersey, at 40.87294, -74.61058. Nearest road: White Trail/Old Dickerson Mine Road.

What rocks and minerals can you find at Mine Hill (feldspar)?+

Mine Hill (feldspar) is reported to produce Feldspar, Sunstone.

Is collecting allowed at Mine Hill (feldspar)?+

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 Mine Hill (feldspar)?+

A rock hammer, a pry bar, gloves, and safety glasses suit pegmatite ground. Work weathered zones and check dump piles; coarse crystals often sit in decomposed rock.

How do I get to Mine Hill (feldspar)?+

Open the directions link to navigate to 40.87294, -74.61058 in Google Maps. The nearest road is White Trail/Old Dickerson Mine Road.

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Open Mine Hill (feldspar) on the map

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