Where to Find Agate Nodules in the United States
3 mapped agate nodules spots across 3 U.S. states. Agate Nodules 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 agate nodules across the United States, with 3 mapped spots
Top states for agate nodules
States ranked by number of agate nodules spots in our database. States in bold link to a focused agate nodules-in-state list.
Every agate nodules spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Carnelian beachIsland Mine Trail | Keweenaw County | 47.9047, -89.0038 | Public | |
| Green Springs Mt.32-3-32.1 | Jackson County |
| 42.1317, -122.5104 | Public |
| Mt. Holly SpringsCold Springs Road | Cumberland County |
| 40.1091, -77.2391 | Public |
Agate Nodules rockhounding FAQ
Where is the best place to find agate nodules in the U.S.?+
Michigan, Oregon, Pennsylvania have the highest concentrations of agate nodules in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many agate nodules rockhounding spots does RockHoundR track?+
3 mapped spots across 3 states. The app keeps these on a map alongside your private finds.
Can I legally collect agate nodules on public land?+
Casual hand collecting of common rocks and minerals like agate nodules 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 agate nodules in the field?+
Field identification of agate nodules 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 agate nodules on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
