Where to Find Concretions in the United States
9 mapped concretions spots across 6 U.S. states. Concretions is reported at multiple rockhounding spots across the United States. The map below shows where collectors most often find it on legal public ground.
Map showing where to find concretions across the United States, with 9 mapped spots
Top states for concretions
States ranked by number of concretions spots in our database. States in bold link to a focused concretions-in-state list.
Every concretions spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| NortonCity Route | Norton County | 39.8353, -99.8718 | Public | |
| Rock City ParkNorth 100th Road | Ottawa County | 39.0927, -97.7391 | Public | |
| Big Horn CanyonRoute 211 | Big Horn County | 45.3130, -107.9604 | Public | |
| Dawes County | Dawes County | 42.6651, -103.1121 | Public | |
| Scottsbluff BadlandsOwl Road | Scotts Bluff County | 41.8518, -103.7082 | Public | |
| Sioux CountyGlen Road | Sioux County | 42.5887, -103.5953 | Public | |
| MedoraI 94 | Billings County | 46.9233, -103.4921 | Public | |
| Oelrichs | Fall River County |
| 43.1256, -103.1669 | Public |
| Big Horn RiverMouth of the Canyon Trail | Big Horn County |
| 44.9643, -108.2509 | Public |
Concretions rockhounding FAQ
Where is the best place to find concretions in the U.S.?+
Nebraska, Kansas, Montana have the highest concentrations of concretions in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many concretions rockhounding spots does RockHoundR track?+
9 mapped spots across 6 states. The app keeps these on a map alongside your private finds.
Can I legally collect concretions on public land?+
Casual hand collecting of common rocks and minerals like concretions is allowed on most BLM and U.S. Forest Service land, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always check with the managing agency before a trip.
How do I identify concretions in the field?+
Field identification of concretions comes down to color, hardness, fracture, and luster. The RockHoundR app links to geology details for each spot to help narrow down what you might be picking up.
Hunt concretions on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
