Where to Find Jasper in Pennsylvania

Pennsylvania jasper concentrates around the Hardyston Quartzite outcrops of the Reading Prong, which crosses Lehigh, Berks, and Northampton counties. The Macungie and Vera Cruz areas yield red and yellow jasper in conglomerate form, the source rock for the famous Lehigh Valley jasper-tipped Native American tools. Smaller showings turn up in the South Mountain area near Carlisle (Cumberland County) and along the Susquehanna highlands. Jasper conglomerate (also called puddingstone) is the distinctive Pennsylvania variant, with jasper pebbles set in quartzite matrix. Surface collecting is mostly on roadcuts and creek beds; active quarry access requires permission.

Best counties for jasper in Pennsylvania

Ranked by the number of mapped jasper spots. County links open the full rockhounding page for that county.

Every jasper spot we track in Pennsylvania

Sorted by county. Coordinates open in Google Maps.

Spot	County	Minerals	Coordinates	Access
South BethlehemKohlersburg Road	Armstrong County	Jasper Petrified Wood	40.9988, -79.3444	Public
Alsace TownshipSeidel Road	Berks County	Chalcedony Jasper Agate	40.3670, -75.8656	Public
ReadingPhiladelphia Avenue	Berks County	Jasper	40.2998, -75.9164	Public
MorrisvilleCapitol View Riverwalk	Bucks County	Jasper	40.2165, -74.7763	Public
NewtownSwamp Road	Bucks County	Jasper Petrified Wood	40.2406, -74.9708	Public
Jim ThorpeJeans' Run Trail	Carbon County	Jasper	40.8729, -75.7688	Public
CarlisleShatto Drive	Cumberland County	Banded Agate Quartz Jasper Amethyst	40.2203, -77.2154	Public
PhiladelphiaBoy Scout Bridge	Delaware County	Agate Petrified Wood Chalcedony Chert Jasper Quartz	40.0130, -75.3895	Public
Area Around Caledonia State ParkChambersburg Water Line Trail	Franklin County	Agate Jasper	39.9120, -77.4984	Public
AllentownSkyline Drive	Lehigh County	Jasper Chert	40.5974, -75.4412	Public
KingstonLuzerne County Levee Trail	Luzerne County	Jasper	41.2489, -75.9023	Public
BridgeportRiver Road	Montgomery County	Calcite Chalcedony Dolomite Goethite Jasper Malachite Quartz Sphalerite	40.0987, -75.3272	Public
DerryMill Street	Westmoreland County	Quartz Chalcedony Jasper	40.3488, -79.2681	Public

Before you go

Read the jasper identification guide so you know what a keeper looks like in the field: Jasper in the encyclopedia.

Jasper in Pennsylvania FAQ

Where can you find jasper in Pennsylvania?+

The mapped spots concentrate in Berks County County, Bucks County County, and Armstrong County County. Known collecting areas include Macungie and Vera Cruz (Lehigh County), Hardyston quartzite belt (Berks County), and South Mountain (Cumberland County). Every spot on this page appears on the map above with coordinates and access notes.

How many jasper spots are mapped in Pennsylvania?+

13 spots across 11 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.

Is it legal to collect jasper in Pennsylvania?+

Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 13 of the 13 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.

Where else to find jasper

More minerals to hunt in Pennsylvania

Hunt jasper in Pennsylvania with the map in your pocket

RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.