Where to Find Moss Opal in the United States
3 mapped moss opal spots across 3 U.S. states. Moss Opal 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 moss opal across the United States, with 3 mapped spots
Top states for moss opal
States ranked by number of moss opal spots in our database. States in bold link to a focused moss opal-in-state list.
Every moss opal spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| WallaceCounty Road Wa S-26 | Wallace County |
| 38.8489, -101.5925 | Public |
| GlendiveI 94 | Dawson County | 47.1149, -104.6650 | Public | |
| Big Hatchet Mountainscdt Ley bushwack | Hidalgo County |
| 31.6215, -108.3640 | Public |
Moss Opal rockhounding FAQ
Where is the best place to find moss opal in the U.S.?+
Kansas, Montana, New Mexico have the highest concentrations of moss opal in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many moss opal 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 moss opal on public land?+
Casual hand collecting of common rocks and minerals like moss opal 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 moss opal in the field?+
Field identification of moss opal 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 moss opal on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
