Best spot

Brookdale Mine: Quartz & Pyromorphite Rockhounding in Chester County, Pennsylvania

Updated July 2026

The Brookdale Mine lies in the Phoenixville / Wheatley lead district, source of some of the finest pyromorphite specimens ever found in the United States. Green and brown pyromorphite occurs here alongside quartz, azurite, cerussite, fluorite and galena. This district is a genuine world-class Pennsylvania mineral locality. Reported finds include quartz, pyromorphite, azurite, cerussite, fluorite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Brookdale Mine photos

Public image records connected to this spot or its reported material.

1 photo

The Hares Hill Road bridge over French Creek near Phoenixville, in the mining district of the Brookdale Mine, Chester County, Pennsylvania

Quick details

Access: Public area
County: Chester County
State: Pennsylvania
Nearest road: Anna Louise Lane
Postcode: 19460
Coordinates: 40.10111, -75.52083

Geology at Brookdale Mine

This spot sits on Felsic and intermediate gneiss, mapped as muscovite 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: muscovite gneiss
Elevation: 240 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 Brookdale Mine

Best months: March to December. Typical highs run 87°F in midsummer and 41°F in midwinter, with winter lows near 22°F.

Climate normals: NOAA 1991-2020 monthlies, PHOENIXVILLE 1 E station (2 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 Brookdale Mine

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 Brookdale Mine.

Across the state line from Brookdale Mine

Brookdale Mine 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.

Brookdale Mine FAQ

Where is Brookdale Mine?+

Brookdale Mine is in Chester County, Pennsylvania, at 40.10111, -75.52083. Nearest road: Anna Louise Lane.

What rocks and minerals can you find at Brookdale Mine?+

Brookdale Mine is reported to produce Quartz, Pyromorphite, Azurite, Cerussite, Fluorite, Galena, Pyrite.

Is collecting allowed at Brookdale Mine?+

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 Brookdale Mine?+

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 Brookdale Mine?+

The most comfortable months at Brookdale Mine are March to December.

How do I get to Brookdale Mine?+

Open the directions link to navigate to 40.10111, -75.52083 in Google Maps. The nearest road is Anna Louise Lane.

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