Crum Creek: Golden Beryl & Amethyst Rockhounding in Delaware County, Pennsylvania
Updated July 2026
Crum Creek drains the pegmatite-rich crystalline rocks of the Delaware County Piedmont, and its gravels concentrate golden beryl, amethyst, garnet and quartz eroded from those bodies. Stream collecting here needs no digging and rewards patient surface hunting. It is an accessible, productive creek locality near Philadelphia. Reported finds include golden beryl, amethyst, garnet, quartz. Below: coordinates, access notes, nearby spots, and trip-planning links.
Crum Creek photos
Public image records connected to this spot or its reported material.
Map showing Crum Creek in Delaware County, Pennsylvania
Quick details
- Access
- Public area
- County
- Delaware County
- State
- Pennsylvania
- Nearest road
- Parkridge Drive
- Postcode
- 19063
- Coordinates
- 39.92273, -75.36417
Geology at Crum Creek
This spot sits on Wissahickon Formation, mapped as mica schist that formed roughly 540 to 250 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
- Wissahickon Formation
- Age
- 540–250 Ma (Paleozoic)
- Rock types
- mica schist
- Elevation
- 110 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 Crum Creek
Best months: February to December. Typical highs run 88°F in midsummer and 43°F in midwinter, with winter lows near 26°F.
Climate normals: NOAA 1991-2020 monthlies, MARCUS HOOK station (8 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 Crum Creek
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 Crum Creek.
- MarpleDelaware County, Pennsylvania · 3 mi awayAmethyst, Quartz
- UplandDelaware County, Pennsylvania · 3 mi awayGeode, Amethyst
- Blue HillDelaware County, Pennsylvania · 4 mi awayAlbite, Amazonite, Beryl
- Prospect ParkDelaware County, Pennsylvania · 4 mi awayKyanite Blades, Feldspar
- Chester CreekTop pick in PennsylvaniaDelaware County, Pennsylvania · 6 mi awayAmethyst, Smoky Quartz
- PhiladelphiaDelaware County, Pennsylvania · 6 mi awayAgate, Petrified Wood, Chalcedony
- East Branch Naamanm CreekDelaware County, Pennsylvania · 8 mi awaySphene, Quartz, Garnet
- BridgeportMontgomery County, Pennsylvania · 12 mi awayCalcite, Chalcedony, Dolomite
Across the state line from Crum Creek
Crum Creek 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.
- Bridgeport & GibbstownGloucester County, New Jersey · 7 mi awayAmber
- Near Brandywine Springs State ParkTop pick in DelawareNew Castle County, Delaware · 14 mi awaySillimanite
- Camden CountyCamden County, New Jersey · 14 mi awayJasper, Stripped Agate, Clear Agate
- Chestnut CreekGloucester County, New Jersey · 14 mi awayAmber
- Mullica HillGloucester County, New Jersey · 15 mi awayAmber, Fossils
- Jean & Ric Edelman Fossil ParkTop pick in New JerseyGloucester County, New Jersey · 17 mi awayAmber, Fossils
Crum Creek FAQ
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More rockhounding in Pennsylvania
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