Rockhounding in New Castle County, Delaware

3 mapped rockhounding spots in New Castle County. Most commonly produces sillimanite, fossils.

Map showing 3 rockhounding spots in New Castle County, Delaware

Minerals reported in New Castle County

Spots in New Castle County

Other rockhounding counties in Delaware

New Castle County FAQ

Where can I rockhound in New Castle County, Delaware?+
RockHoundR tracks 3 rockhounding spots in New Castle County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.
What rocks and minerals are common in New Castle County?+
Spots in New Castle County most often produce Sillimanite, Fossils. Individual spots can vary widely.
Are these New Castle County rockhounding spots on public land?+
Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.

Plan a New Castle County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.

Download on the App StoreGet it on Google Play