The Solitario: Galena Rockhounding in Presidio County, Texas

Quick details

Access

Permission required

County

Presidio County

State

Texas

Coordinates

29.45082, -103.80902

Geology at The Solitario

This spot sits on volcanic rocks, mapped as felsic volcanic and felsic hypabyssal that formed roughly 56 to 34 million years ago. Volcanic ground like this weathers into rocky slopes and float, and fresh exposures in cuts and drainages are usually the most productive places to look.

Mapped unit

volcanic rocks

Age

56–34 Ma (Eocene)

Rock types

felsic volcanic and felsic hypabyssal

Elevation

4,610 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 The Solitario

Best months: July to May. Typical highs run 90°F in midsummer and 60°F in midwinter, with winter lows near 29°F.

Climate normals: NOAA 1991-2020 monthlies, BIG BEND RCH SP station (9 mi away), adjusted for elevation.

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

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 The Solitario

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

• GalenaEncyclopedia →