Best Rockhounding in Hancock County, IL (9 Spots)

Standouts in Hancock County

Hand-picked spots in Hancock County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Hamilton
Public
Hancock County
Hamilton lies on the Mississippi River within the Keokuk geode bed, a Lower Mississippian (Warsaw Formation) zone regarded as one of the finest quartz-geode localities on Earth.
Agate, Jasper, Geode
Top pick
Niota
Public
Hancock County
Niota anchors the eastern edge of the Hancock County geode country, where creeks cross county roads and expose Warsaw Formation geodes weathering out of the outcrop.
Fossils, Geode

Spots in Hancock County

Spot	Minerals	Coordinates	Access
Crystal Glen CreekNorth County Road 700	Geode Barite Calcite Dolomite Goethite Pyrite Quartz Selenite	40.3714, -91.3755	Public
Dallas CityOak Street	Geode Calcite Malachite	40.6308, -91.1664	Public
HamiltonSouth 9th Street	Agate Jasper Geode	40.3872, -91.3462	Public
Hamilton QuarrySouth 2nd Street	Geode Pyrite Calcite Sphalerite	40.3822, -91.3554	Public
Mississippi River (near Hamilton)	Geode Amethyst Quartz	40.3833, -91.3765	Public
NauvooNorth County Road 800	Geode	40.5218, -91.3516	Public
NiotaNorth Morman Springs Road	Fossils Geode	40.6118, -91.3065	Public
Spillman CreekNorth County Road 1540	Geode Pyrite Chalcedony Sphalerite Quartz	40.6163, -91.2030	Public
Tyson Creek	Geode	40.5880, -91.2880	Public

Neighboring counties in Illinois

Adjacent rockhounding counties, ranked by how close their centroids sit to Hancock County. A natural extension if Hancock County is already on your trip plan.

Across the state line from Hancock County

Rockhounding counties in neighboring states within driving range. Geology rarely respects state borders — these are often the closest mapped spots you can reach without going deeper into Illinois.

Hancock County FAQ

Where can I rockhound in Hancock County, Illinois?+

RockHoundR tracks 9 rockhounding spots in Hancock County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Hancock County?+

Spots in Hancock County most often produce Geode, Calcite, Pyrite, Quartz, Sphalerite. Individual spots can vary widely.

Are these Hancock 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 Hancock County rockhounding trip

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

Rockhounding in Hancock County, Illinois

Hancock County rockhounding photos

Minerals reported in Hancock County