Tri-State Marker — Rockhounding in Cimarron County, Oklahoma
Tri-State Marker is a mapped rockhounding spot in Cimarron County, Oklahoma. Reported finds include rose agate. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Tri-State Marker in Cimarron County, Oklahoma
Quick details
- Access
- Check locally
- County
- Cimarron County
- State
- Oklahoma
- Nearest road
- E0007 Road
- Coordinates
- 36.99913, -103.00057
Land & collecting status
Confirm rules before collecting
Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ.
Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.
Found at Tri-State Marker
Each chip links to all spots in the U.S. that produce that material.
- Rose Agate
Nearby rockhounding spots
Other rockhounding spots within driving distance of Tri-State Marker.
Tri-State Marker FAQ
Where is Tri-State Marker?+
What rocks and minerals can you find at Tri-State Marker?+
Is collecting allowed at Tri-State Marker?+
How do I get to Tri-State Marker?+
More rockhounding in Oklahoma
See all 34 Oklahoma spots →Open Tri-State Marker on the map
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