Tonopah Area — Agate & Petrified Wood

A silver camp on volcanic rock

Tonopah is the county seat of Nye County. It sits at about 6,047 feet at the junction of US 6 and US 95, roughly midway between Las Vegas and Reno, according to Wikipedia. The town grew up around Jim Butler’s silver discovery in about 1900. Wikipedia calls the popular story of Butler finding ore while chasing a stray burro likely apocryphal, and notes that members of his wife Belle’s Paiute family guided him to the area. By 1920 the town had less than half the population it had fifteen years earlier.

A 2019 U.S. Geological Survey report describes the geology. The silver-gold veins are quartz-adularia veins hosted mainly in lava flows and breccias of the Mizpah Trachyte, part of a Miocene volcanic sequence tied to the ancestral Cascades arc. The USGS dates the Mizpah Trachyte to about 21.4 million years ago and reports that the district produced more than 174 million ounces of silver and 1.86 million ounces of gold, mostly from 1910 to 1930.

What collectors report

This entry lists agate, jasper, and petrified wood, but the sources checked for this note do not support that list for the Tonopah area itself. No agency source names collecting minerals here. The hobbyist guide Rockhound Resource lists “Petrified algae, Jade” for an area about 11 miles east of Tonopah and “Jade, Petrified wood, Wonderstone” for the San Antonio Mountains about 12 miles north. It names no agate or jasper near town. Rockhounding.org’s Tonopah page lists only ore metals (copper, gold, lead, silver, platinum, mercury, tungsten) and does not name a land manager. Neither guide gives directions or says the ground is open to collecting.

Tonopah Historic Mining Park

The park’s own site says it covers more than 100 acres and includes portions of four of the original major mining companies, among them the Mizpah, Silver Top, and Desert Queen areas. It also has a visitor center with a bookstore, equipment displays, a small theater, and a short-wave ultraviolet mineral display. It lists hours of 9 a.m. to 5 p.m., seven days a week, closed on federal and state holidays. Visitors can take a self-guided walking tour or reserve a guided Polaris tour. The Burro Tunnel is a walk down a mine tunnel that crosses one of the original discovery stopes and ends in a steel viewing cage looking down a 500-foot stope. The town’s tourism page places that 500-foot stope view at the restored Mizpah Mine Shaft instead. Wikipedia says the Tonopah Mining Company stopped operating by 1956 and that a nonprofit foundation turned the site into a park in 1992.

Land and collecting rules

The BLM Tonopah Field Office, part of the Battle Mountain District, has its office in town. On BLM land, the agency allows reasonable amounts of rocks, mineral specimens, and gemstones for personal use, not for sale or barter, using hand tools with no more than minor surface disturbance. Petrified wood is limited to 25 pounds plus one piece per day, and 250 pounds per person per year. Collecting on a mining claim requires the claimholder’s permission, and campgrounds and picnic sites are off limits. Under the Archaeological Resources Protection Act, artifacts, historic bottles, and remnants of historic structures stay where they are. With claims and private parcels around an active mining district, confirm land status with the field office before collecting.

Safety

The Nevada Division of Minerals warns that hazardous abandoned mines, including shafts, stopes, and open pits, are found throughout Nevada, are unstable with age, and can be difficult to see. Stay out of old workings outside the mining park.