Lander County: Chalcedony & Jasper Rockhounding in Lander County, Nevada

Plan your visit

Generally open to casual rockhounding

County

Lander County

State

Nevada

Nearest road

Battle Mountain Road

Coordinates

39.88576, -117.11302

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.

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 Lander County

Comfortable months (45 to 90°F highs)

Best months: August to June. Typical highs run 91°F in midsummer and 47°F in midwinter, with winter lows near 31°F.

Climate normals: NOAA 1991-2020 monthlies, AUSTIN #2 station (27 mi away), adjusted for elevation.

Geology at Lander County

This spot sits on Alluvium, undifferentiated, mapped as coarse alluvium and fine alluvium that formed within roughly the last 3 million 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, undifferentiated

Age

3 Ma to present (Pleistocene to Holocene)

Rock types

coarse alluvium and fine alluvium

Elevation

5,350 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