Where to Find Gastroliths in the United States
4 mapped gastroliths spots across 1 U.S. states. Gastroliths 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 gastroliths across the United States, with 4 mapped spots
Top states for gastroliths
States ranked by number of gastroliths spots in our database. States in bold link to a focused gastroliths-in-state list.
Every gastroliths spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Greybull | Big Horn County |
| 44.6465, -107.8070 | Public |
| HyattvilleRea Grove Lane | Big Horn County | 44.2441, -107.5260 | Public | |
| LovellMedicine Wheel Passage | Big Horn County |
| 44.7977, -108.0474 | Public |
| Buffalo | Johnson County |
| 44.4527, -106.5548 | Public |
Gastroliths rockhounding FAQ
Where is the best place to find gastroliths in the U.S.?+
Wyoming have the highest concentrations of gastroliths in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many gastroliths rockhounding spots does RockHoundR track?+
4 mapped spots across 1 states. The app keeps these on a map alongside your private finds.
Can I legally collect gastroliths on public land?+
Casual hand collecting of common rocks and minerals like gastroliths 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 gastroliths in the field?+
Field identification of gastroliths 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 gastroliths on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
