San Antonio Mountains: Jade & Petrified Wood Rockhounding in Nye County, Nevada

Plan your visit

Generally open to casual rockhounding

County

Nye County

State

Nevada

Coordinates

38.25194, -117.19741

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Access note: Broad public-access mountain range north of Tonopah. Confirm BLM parcel and claim status before collecting, and avoid old mine workings.

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.

Best time to visit San Antonio Mountains

Comfortable months (45 to 90°F highs)

Best months: March to November. Typical highs run 86°F in midsummer and 39°F in midwinter, with winter lows near 21°F.

Climate normals: NOAA 1991-2020 monthlies, TONOPAH station (13 mi away), adjusted for elevation.

Geology at San Antonio Mountains

This spot sits on Alluvium, undifferentiated, mapped as coarse alluvium and fine alluvium that formed within roughly the last 3 million years. Petrified wood typically travels as tough float, and worked gravels like these are exactly where weathered pieces tend to collect.

Mapped unit

Alluvium, undifferentiated

Age

3 Ma to present (Pleistocene to Holocene)

Rock types

coarse alluvium and fine alluvium

Elevation

6,700 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.

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

• BLM Nevada, Recreation
• Nevada Bureau of Mines and Geology
• Royal Peacock Opal Mine (fee-dig operator)
• Community submissions reviewed against published agency rules