Eagle Flat: Augite Rockhounding in Hudspeth County, Texas

Updated June 2026

Eagle Flat is a mapped rockhounding spot in Hudspeth County, Texas. Reported finds include augite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Hudspeth County
State: Texas
Coordinates: 31.11710, -105.13808

Geology at Eagle Flat

This spot sits on Alluvial fan deposits, mapped as coarse alluvium that formed within roughly the last 3 million years. Loose deposits like these are float-collecting ground: erosion keeps moving durable rocks and minerals into gravel bars, cutbanks, and washes.

Mapped unit: Alluvial fan deposits
Age: 3 Ma to present (Pleistocene to Holocene)
Rock types: coarse alluvium
Elevation: 4,530 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 Eagle Flat

Best months: August to May. Typical highs run 91°F in midsummer and 57°F in midwinter, with winter lows near 28°F.

Climate normals: NOAA 1991-2020 monthlies, VAN HORN station (19 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 Eagle Flat

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

Augite

Nearby rockhounding spots

Other rockhounding spots within driving distance of Eagle Flat.

Eagle Flat FAQ

Where is Eagle Flat?+

Eagle Flat is in Hudspeth County, Texas, at 31.11710, -105.13808.

What rocks and minerals can you find at Eagle Flat?+

Eagle Flat is reported to produce Augite.

Is collecting allowed at Eagle Flat?+

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 Eagle Flat?+

A rock hammer, sturdy gloves, safety glasses, and a collecting bag cover the basics here. Add a spray bottle: wet rock shows color and pattern that dry rock hides.

When is the best time to visit Eagle Flat?+

The most comfortable months at Eagle Flat are August to May.

How do I get to Eagle Flat?+

Open the directions link to navigate to 31.11710, -105.13808 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Texas

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Open Eagle Flat on the map

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