Rio Grande — Rockhounding in Starr County, Texas

Rio Grande is a mapped rockhounding spot in Starr County, Texas. Reported finds include agate, chalcedony, jasper. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Starr County
State: Texas
Coordinates: 26.36239, -98.83520

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

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.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

Texas Parks and Wildlife Department
Bureau of Economic Geology — Texas geology
Big Bend National Park — Rules
Community submissions reviewed against published agency rules

Found at Rio Grande

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Rio Grande.

Rio Grande FAQ

Where is Rio Grande?+

Rio Grande is in Starr County, Texas, at 26.36239, -98.83520.

What rocks and minerals can you find at Rio Grande?+

Rio Grande is reported to produce Agate, Chalcedony, Jasper.

Is collecting allowed at Rio Grande?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

How do I get to Rio Grande?+

Open the directions link to navigate to 26.36239, -98.83520 in Google Maps. Some spots are remote — check road conditions before driving out.

More rockhounding in Texas

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Open Rio Grande on the map

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