Wrightsdale: Brucite & Chromite Rockhounding in Chester County, Pennsylvania

Plan your visit

Generally open to casual rockhounding

County

Chester County

State

Pennsylvania

Nearest road

Horseshoe Loop Road

Coordinates

39.72750, -76.13260

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

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.

Best time to visit Wrightsdale

Comfortable months (45 to 90°F highs)

Best months: March to December. Typical highs run 87°F in midsummer and 40°F in midwinter, with winter lows near 24°F.

Climate normals: NOAA 1991-2020 monthlies, CONOWINGO DAM station (5 mi away).

Geology at Wrightsdale

This spot sits on Peters Creek Schist, mapped as mica schist and quartzite that formed roughly 540 to 250 million years ago. Metamorphic rock like this weathers into resistant float, and minerals that survive transport typically concentrate in nearby drainages.

Mapped unit

Peters Creek Schist

Age

540–250 Ma (Paleozoic)

Rock types

mica schist and quartzite

Elevation

170 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.

• Pennsylvania Geological Survey
• DCNR state park and state forest rules
• Allegheny National Forest
• Community submissions reviewed against published agency rules