Mapleton: Quartz Rockhounding in Huntingdon County, Pennsylvania

Updated June 2026

Mapleton is a mapped rockhounding spot in Huntingdon County, Pennsylvania. Reported finds include quartz. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Huntingdon County
State: Pennsylvania
Nearest road: Hares Valley Road
Postcode: 17052
Coordinates: 40.37960, -77.95065

Geology at Mapleton

This spot sits on ground mapped as Onondaga and Old Port Formations, undivided that formed roughly 420 to 385 million years ago. Quartz crystals typically weather out of veins and pockets and end up in nearby soils and creek beds.

Mapped unit: Onondaga and Old Port Formations, undivided
Age: 420–385 Ma (Early Devonian to Middle Devonian)
Elevation: 900 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 Mapleton

Best months: March to November. Typical highs run 85°F in midsummer and 38°F in midwinter, with winter lows near 21°F.

Climate normals: NOAA 1991-2020 monthlies, RAYSTOWN LAKE 2 station (7 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 Mapleton

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Quartz Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Mapleton.

Across the state line from Mapleton

Mapleton 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.

Mapleton FAQ

Where is Mapleton?+

Mapleton is in Huntingdon County, Pennsylvania, at 40.37960, -77.95065. Nearest road: Hares Valley Road.

What rocks and minerals can you find at Mapleton?+

Mapleton is reported to produce Quartz.

Is collecting allowed at Mapleton?+

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 Mapleton?+

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 Mapleton?+

The most comfortable months at Mapleton are March to November.

How do I get to Mapleton?+

Open the directions link to navigate to 40.37960, -77.95065 in Google Maps. The nearest road is Hares Valley Road.

More rockhounding in Pennsylvania

See all 88 Pennsylvania spots →

Open Mapleton on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.