Bonanza Opal Mines: Rockhounding in Humboldt County, Nevada

Updated June 2026

Bonanza Opal Mines is a mapped rockhounding spot in Humboldt County, Nevada. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Paid / fee dig
County: Humboldt County
State: Nevada
Nearest road: Sagebrush Creek Road
Coordinates: 41.84679, -119.00652

Geology at Bonanza Opal Mines

This spot sits on Alluvium, undifferentiated, mapped as coarse alluvium and fine 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: Alluvium, undifferentiated
Age: 3 Ma to present (Pleistocene to Holocene)
Rock types: coarse alluvium and fine alluvium
Elevation: 4,860 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 Bonanza Opal Mines

Best months: February to June. Typical highs run 92°F in midsummer and 41°F in midwinter, with winter lows near 19°F.

Climate normals: NOAA 1991-2020 monthlies, DENIO station (22 mi away), adjusted for elevation.

Land & collecting status

Pay-to-dig site

This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out.

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

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

Nearby rockhounding spots

Other rockhounding spots within driving distance of Bonanza Opal Mines.

Across the state line from Bonanza Opal Mines

Bonanza Opal Mines is close enough to the Nevada border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Bonanza Opal Mines FAQ

Where is Bonanza Opal Mines?+

Bonanza Opal Mines is in Humboldt County, Nevada, at 41.84679, -119.00652. Nearest road: Sagebrush Creek Road.

What rocks and minerals can you find at Bonanza Opal Mines?+

Bonanza Opal Mines is on the rockhounding map but no minerals are listed in our reference. Open RockHoundR to see what other rockhounds have logged.

Is collecting allowed at Bonanza Opal Mines?+

Pay-to-dig site. This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Bonanza Opal Mines?+

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 Bonanza Opal Mines?+

The most comfortable months at Bonanza Opal Mines are February to June.

How do I get to Bonanza Opal Mines?+

Open the directions link to navigate to 41.84679, -119.00652 in Google Maps. The nearest road is Sagebrush Creek Road.

More rockhounding in Nevada

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Open Bonanza Opal Mines on the map

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