White Basin: Ulexite Rockhounding in Clark County, Nevada

Plan your visit

Generally open to casual rockhounding

County

Clark County

State

Nevada

Coordinates

36.35019, -114.58939

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: Muddy Mountains area near BLM and NPS-administered lands. Confirm the exact parcel before collecting, because nearby national recreation and wilderness lands can have stricter rules. BLM records active mining claims in this area. Collecting from inside an active claim needs the claim holder's permission.

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 White Basin

Comfortable months (45 to 90°F highs)

Best months: October to May. Typical highs run 104°F in midsummer and 57°F in midwinter, with winter lows near 39°F. Summer heat here is intense, so carry more water than you think you need and work the early morning.

Climate normals: NOAA 1991-2020 monthlies, VALLEY OF FIRE SP station (7 mi away), adjusted for elevation.

Geology at White Basin

This spot sits on ground mapped as Horse Spring Formation, Lovell Wash Member, limestone and sandstone facies that formed roughly 28 to 16 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

Horse Spring Formation, Lovell Wash Member, limestone and sandstone facies

Age

28–16 Ma (Late Oligocene to Early Miocene)

Elevation

2,430 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