Bishop Ranch: Texas Bouquet Agate Rockhounding in Presidio County, Texas

Updated June 2026

Bishop Ranch is a mapped rockhounding spot in Presidio County, Texas. Reported finds include texas bouquet agate. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Presidio County
State: Texas
Nearest road: RM 169
Coordinates: 30.14791, -104.03752

Geology at Bishop Ranch

This spot sits on Alluvium, mapped as fine alluvium and coarse alluvium that formed within roughly the last 12,000 years. Gravels like these concentrate whatever survives the river: agate, jasper, and other tough silica typically show up as rounded, waxy stones.

Mapped unit: Alluvium
Age: < 1 Ma (Holocene)
Rock types: fine alluvium and coarse alluvium
Elevation: 4,340 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Bishop Ranch

Best months: August to May. Typical highs run 91°F in midsummer and 61°F in midwinter, with winter lows near 26°F.

Climate normals: NOAA 1991-2020 monthlies, MARFA 3W station (12 mi away), adjusted for elevation.

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 Bishop Ranch

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

Texas Bouquet Agate Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Bishop Ranch.

Bishop Ranch FAQ

Where is Bishop Ranch?+

Bishop Ranch is in Presidio County, Texas, at 30.14791, -104.03752. Nearest road: RM 169.

What rocks and minerals can you find at Bishop Ranch?+

Bishop Ranch is reported to produce Texas Bouquet Agate.

Is collecting allowed at Bishop Ranch?+

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.

What tools should I bring to Bishop Ranch?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Bishop Ranch?+

The most comfortable months at Bishop Ranch are August to May.

How do I get to Bishop Ranch?+

Open the directions link to navigate to 30.14791, -104.03752 in Google Maps. The nearest road is RM 169.

More rockhounding in Texas

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Open Bishop Ranch on the map

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