Blue Hill: Albite & Amazonite Rockhounding in Delaware County, Pennsylvania

Updated June 2026

Blue Hill is a mapped rockhounding spot in Delaware County, Pennsylvania. Reported finds include albite, amazonite, beryl, feldspar, sunstone, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Permission required
County: Delaware County
State: Pennsylvania
Nearest road: Sycamore Mills Road
Postcode: 19063
Coordinates: 39.94669, -75.42360

Geology at Blue Hill

This spot sits on Felsic and intermediate gneiss, mapped as gneiss that formed roughly 4600 to 540 million years ago. Metamorphic terrain like this typically carries quartz veins and sweats, and weathered crystals tend to end up in the soils and streams below.

Mapped unit: Felsic and intermediate gneiss
Age: 4600–540 Ma (Precambrian)
Rock types: gneiss
Elevation: 190 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 Blue Hill

Best months: February to December. Typical highs run 88°F in midsummer and 42°F in midwinter, with winter lows near 26°F.

Climate normals: NOAA 1991-2020 monthlies, MARCUS HOOK station (8 mi away), adjusted for elevation.

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.

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 Blue Hill

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 Blue Hill.

Across the state line from Blue Hill

Blue Hill is close enough to the Pennsylvania border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Blue Hill FAQ

Where is Blue Hill?+

Blue Hill is in Delaware County, Pennsylvania, at 39.94669, -75.42360. Nearest road: Sycamore Mills Road.

What rocks and minerals can you find at Blue Hill?+

Blue Hill is reported to produce Albite, Amazonite, Beryl, Feldspar, Sunstone, Quartz.

Is collecting allowed at Blue Hill?+

Permission required before collecting. Requires landowner or agency permission before any collecting. Do not enter without explicit authorization. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Blue Hill?+

A rock hammer, a small pry bar, gloves, and safety glasses cover most crystal ground. A screen helps in loose pocket soil, and newspaper protects points on the way out.

When is the best time to visit Blue Hill?+

The most comfortable months at Blue Hill are February to December.

How do I get to Blue Hill?+

Open the directions link to navigate to 39.94669, -75.42360 in Google Maps. The nearest road is Sycamore Mills Road.

More rockhounding in Pennsylvania

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Open Blue Hill on the map

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