Cape Henlopen State Park
Approximate — check official site before visiting
State park at the mouth of Delaware Bay. Popular for collecting 'Cape May Diamonds' — weathered quartz crystals found on both sides of the cape. Also yields jasper and chalcedony along the shoreline. Best after storms or at low tide when fresh material is exposed.
🌐 Visit Official Site →🪨 What You Can Find Here
Quartz Crystals
Clear, smoky, and rose quartz crystals are among the most common and rewarding rockhounding finds. Arkansas produces world-class quartz.
Also found at:
Jasper
Opaque, fine-grained chalcedony prized for its rich earthy colors and patterns. Oregon, Washington, Idaho, and Alabama produce exceptional jasper varieties.
Also found at:
Chalcedony
Microcrystalline quartz found in many varieties including agate, jasper, and petrified wood. Widespread throughout the US in volcanic and sedimentary rocks.
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📍 Nearby Locations in Delaware
Delaware Sillimanite Beds
Newark, Delaware · Public Land
Piedmont exposures in the Newark area yielding sillimanite (Delaware's state mineral), a high-grade metamorphic mineral found in the gneisses and pegm...
Delaware Bay Fossil Beaches
Lewes, Delaware · Public Beach
Delaware Bay beaches for fossil shark teeth, shells, and Miocene marine fossils. Best after storms. Similar to Calvert Cliffs across the bay.
C&D Canal Fossil Beds
St. Georges, Delaware · Public Land
The Chesapeake & Delaware Canal is Delaware's best fossil site. Canal construction exposed Cretaceous formations (144-65 million years old) containing...
Reedy Point Bridge Fossil Site
St. Georges, Delaware · Public Land
Fossil collecting near the C&D Canal at Reedy Point Bridge. Cretaceous fossils including belemnites, clams, fish bones, and shark teeth. Small-scale c...
Hoopes Reservoir
Greenville, Delaware · Public Land
Man-made lake formed in 1934 by damming Red Clay Creek. Known for rich deposits of sillimanite (Delaware's state mineral). Also yields quartz, feldspa...
Coursey Pond
Dover, Delaware · Public Land
Small freshwater pond in Kent County in the Atlantic Coastal Plain. Glacial and sedimentary deposits yield quartz pebbles, feldspar fragments, and mic...
⛏️ Recommended Gear
Make the most of your visit to Cape Henlopen State Park with the right equipment.
Rock Hammer
The most essential rockhounding tool. Choose a hammer with both a flat striking face and a pointed pick end.
Typical: $25-45
Safety Glasses
Mandatory protective gear. Rock chips fly unpredictably when hammering.
Typical: $10-20
Chisel Set
Cold chisels in 3-4 sizes for precise extraction from matrix rock.
Typical: $15-30
Geologist's Pick
A heavier crack hammer for splitting hard rock. Essential for hard rock mining areas.
Typical: $35-60
Sifting Screen
Stackable mesh screens for sifting gravel and dirt. Essential for gem and fossil hunting.
Typical: $20-40
UV Flashlight
Long-wave UV light for finding fluorescent minerals and Yooperlites.
Typical: $15-35