Sylvanite: Gold Prospecting in Lincoln County, Montana

Updated June 2026

Sylvanite is a mapped rockhounding spot in Lincoln County, Montana. Reported finds include gold, pyrite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Lincoln County
State: Montana
Nearest road: Yaak River Road
Coordinates: 48.70821, -115.87512

Geology at Sylvanite

This spot sits on Prichard Formation, quartzite, mapped as argillitic quartzite and feldspathic argillitic quartzite that formed roughly 1600 to 1000 million years ago. Gold in metamorphic belts like this is typically tied to quartz veins and shear zones, with placer color in the creeks that cut them.

Mapped unit: Prichard Formation, quartzite
Age: 1600–1000 Ma (Mesoproterozoic)
Rock types: argillitic quartzite and feldspathic argillitic quartzite
Elevation: 2,880 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 Sylvanite

Best months: March to October. Typical highs run 84°F in midsummer and 30°F in midwinter, with winter lows near 20°F.

Climate normals: NOAA 1991-2020 monthlies, TROY station (16 mi away), adjusted for elevation.

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.

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 Montana, Recreational mineral collecting
Montana Bureau of Mines and Geology
Gem Mountain Sapphire Mine (fee-dig operator)
Community submissions reviewed against published agency rules

Found at Sylvanite

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Sylvanite.

Across the state line from Sylvanite

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

Sylvanite FAQ

Where is Sylvanite?+

Sylvanite is in Lincoln County, Montana, at 48.70821, -115.87512. Nearest road: Yaak River Road.

What rocks and minerals can you find at Sylvanite?+

Sylvanite is reported to produce Gold, Pyrite.

Is collecting allowed at Sylvanite?+

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. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Sylvanite?+

A gold pan, a classifier screen, a small shovel, and a snuffer bottle cover the basics. Motorized equipment and sluices fall under separate rules in most states, so start with hand tools.

When is the best time to visit Sylvanite?+

The most comfortable months at Sylvanite are March to October.

How do I get to Sylvanite?+

Open the directions link to navigate to 48.70821, -115.87512 in Google Maps. The nearest road is Yaak River Road.

More rockhounding in Montana

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Open Sylvanite on the map

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