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Rockhounding in Pennsylvania

Updated August 2026

90 mapped spots for rock hunting and rock collecting across 29 counties. Pennsylvania rockhounding centers on the Piedmont of Chester, Delaware, and Lancaster counties, where Wissahickon schist and serpentine barrens give up garnet, kyanite, beryl, and Pennsylvania amethyst, and on the old iron and copper mines of Berks and Lebanon counties with azurite, malachite, and magnetite. Add Lehigh and Bucks county jasper, Devonian fossil pits that welcome collectors, and calcite from the limestone valleys.

Where is the best rockhounding in Pennsylvania?

The best rockhounding in Pennsylvania is at Cecil County in Lancaster County (kammererite, serpentine), Morrison Cove in Bedford County (quartz, amethyst), and Area Around Caledonia State Park in Franklin County (agate, jasper). In total, 90 mapped collecting spots across 29 counties produce quartz, calcite, and jasper, each listed below with its land access.

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Every rockhounding spot in Pennsylvania

Pennsylvania rockhounding photos

Representative spot and material photos from locations in this state, shown where verified public image records are available.

5 photos

Top minerals found in Pennsylvania

Counts reflect how many spots in this list mention each mineral.

Notable areas: Pennsylvania amethyst, Chester County garnet and kyanite, Brookdale Mine pyromorphite, Cornwall magnetite, Vera Cruz jasper, and Swatara trilobites are the Pennsylvania targets collectors travel for.

Geology behind Pennsylvania rockhounding

Southeastern Pennsylvania is Piedmont: the Wissahickon schist and gneiss of Delaware and Chester counties carry almandine garnet, kyanite, staurolite, and pegmatites with beryl and feldspar, and the amethyst-bearing quartz veins that made Pennsylvania amethyst a collector name. The serpentine barrens along the Maryland line at Nottingham and Goat Hill carry chromite, magnesite, and green serpentine. North of that, the Reading Prong and the Triassic basin host the old iron mines (Cornwall's magnetite and chalcopyrite, the Boyertown and Jones mines with azurite and malachite) and the Phoenixville lead mines with pyromorphite and wulfenite. The Vera Cruz and Durham jaspers of Lehigh and Bucks counties are Cambrian quartzite altered to red and yellow chert that Native Americans quarried. The Ridge and Valley province is folded Paleozoic limestone and shale with calcite, celestite, and Devonian trilobites in road cuts and designated fossil pits, and the Allegheny Plateau adds petrified wood and plant fossils in the coal measures.

Best regions to focus your search

Piedmont (Chester, Delaware, Lancaster)

Garnet and kyanite in Chester and Crum creeks, amethyst in weathered veins near Coatesville and Upper Providence, beryl in old pegmatite quarries, and serpentine minerals at Nottingham County Park. Mostly private and suburban; parks and club trips are the access.

Iron and copper country (Berks, Lebanon, Chester)

Azurite and malachite around Reading's old iron pits, magnetite and chalcopyrite at Cornwall, pyromorphite and wulfenite from the Phoenixville and Brookdale mine dumps. All private; ask before you walk in.

Jasper belt (Lehigh, Bucks, Berks)

Vera Cruz and Durham jasper as float in fields and creeks, along with quartz and chalcedony. Small municipal parks preserve some quarry pits; surrounding land is private.

Ridge and Valley fossils and calcite (Cumberland, Franklin, Bedford, Lebanon)

Devonian trilobites at Swatara State Park's fossil pit and the Montour Preserve, calcite and celestite in limestone road cuts around Carlisle and Morrison Cove, quartz and jasper on South Mountain near Caledonia.

Best season

March through May and October through November, when plowed fields and leaf-off road cuts show float and the ticks are down. Creek collecting is best at summer low water. The fossil pits are open in season; check hours before a long drive.

What to bring

Rock hammer and chisels, safety glasses, gloves, a trowel and quarter-inch screen for saprolite and creek gravel, a putty knife and newspaper for shale fossils, and a hand lens. Suburban Piedmont sites need a polite ask and a small footprint.

Local collecting history

Cornwall's iron mine ran from 1742 to 1973, one of the longest-lived in the country, and the Phoenixville lead mines and Chester County pegmatite quarries supplied 19th-century collectors with specimens still traded today. Pennsylvania amethyst from the Piedmont was cut for jewelry in the 1800s.

Rockhounding near major Pennsylvania cities

Day-trip range. Each section lists the closest mapped rockhounding spots within about 150 miles of the city. Most are inside a 2 to 3 hour drive.

Rockhounding near Philadelphia

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6 closest spots to Philadelphia, PA.

  • Camden CountyCamden County · Jasper, Stripped Agate3 mi4 min drive
  • Prospect ParkDelaware County · Kyanite Blade, Feldspar9 mi11 min drive
  • Crum CreekDelaware County · Golden Beryl, Amethyst11 mi13 min drive
  • Bridgeport & GibbstownGloucester County · Amber11 mi14 min drive
  • Chestnut CreekGloucester County · Amber11 mi14 min drive
  • BurlingtonBurlington County · Amber12 mi15 min drive

Rockhounding near Allentown

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6 closest spots to Allentown, PA.

  • AllentownLehigh County · Jasper, Chert3 mi3 min drive
  • MacungieLehigh County · Blue Corundum, Sapphire8 mi9 min drive
  • EastonNorthampton County · Chert, Flint14 mi18 min drive
  • PhillipsburgWarren County · Serpentine, Soapstone16 mi20 min drive
  • RiegelsvilleHunterdon County · Jasper, Quartz16 mi20 min drive
  • KunkeltownMonroe County · Quartz, Azurite17 mi21 min drive

Neighboring states with rockhounding

Geology rarely respects state borders. These states share mapped rockhounding country with Pennsylvania, useful when Pennsylvania is the start, not the whole trip. Each card links to the closest county across the line.

Rockhounding by county in Pennsylvania

County pages are linked once we have at least 3 mapped spots for a focused guide with coordinates, mineral notes, and nearby spots.

Top picks in Pennsylvania

10 best spots

Hand-picked standouts from the Pennsylvania list, chosen for unusual mineralogy, documented public access, or both. Each card links to coordinates, access notes, and what to look for.

Rock and mineral clubs in Pennsylvania

17 clubs in Pennsylvania. Clubs run field trips, shows and workshops, and many trips go to private claims you can't reach alone.

All 17 Pennsylvania clubs →

Pennsylvania rockhounding FAQ

Is rockhounding legal in Pennsylvania?+
Yes, on Allegheny National Forest land for personal-use hand collecting, at designated fossil sites like Swatara State Park and the Montour Preserve, at fee sites, and on private land with permission. State forests, state parks, and game lands otherwise prohibit removing rocks and minerals.
Where can I find Pennsylvania amethyst?+
The Piedmont of Chester and Delaware counties, historically around Coatesville, Upper Providence, and the Chester Creek drainage, where amethyst grew in quartz veins that now weather out into saprolite and creek gravel. Nearly all of it is private and suburban, so access is by permission or club trip.
Where can I collect fossils in Pennsylvania?+
Swatara State Park near Pine Grove has a fossil pit where collectors may keep Devonian trilobites and brachiopods; the Montour Preserve near Danville has a similar pit. St. Clair in Schuylkill County is a fee site for white fern fossils. Road cuts in the Ridge and Valley are productive but rights-of-way are not public collecting ground.
Can I collect at Nottingham County Park?+
Nottingham County Park in Chester County preserves the serpentine barrens and old chromite pits. Surface observation is welcome; check the park's current rules before removing material, and never enter the fenced pits.
What rocks and minerals can you find in Pennsylvania?+
Pennsylvania spots in this list most often produce quartz, calcite, jasper, amethyst, petrified wood, azurite, chalcedony, and chert, plus garnet, kyanite, beryl, magnetite, pyromorphite, and Devonian fossils.
Where can I go rock hunting in Pennsylvania?+
Rock hunting, rock collecting and rockhounding are the same hobby under different names. 90 spots are mapped in Pennsylvania, 78 of them with public access. Chester County, Delaware County, and Berks County have the most.
Is there gem mining or pay-to-dig in Pennsylvania?+
No fee digs or pay-to-dig gem mines are mapped in Pennsylvania yet. 78 of the 90 spots here have public access, so you can collect without paying a dig fee.
Where can I dig for crystals in Pennsylvania?+
39 mapped spots in Pennsylvania report quartz, amethyst, or smoky quartz, mostly in Chester County, Delaware County, and Cumberland County. Each one is in the list on this page with its land access.
Can you find geodes in Pennsylvania?+
Yes. 4 mapped spots in Pennsylvania report geodes, mostly in Armstrong County, Berks County, and Delaware County.

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