Radersburg: Gold Prospecting in Broadwater County, Montana

Updated June 2026

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

Quick details

Access: Public area
County: Broadwater County
State: Montana
Nearest road: Keating Gulch Road
Postcode: 59641
Coordinates: 46.19213, -111.66446

Geology at Radersburg

This spot sits on Andesite, mapped as andesite that formed roughly 145 to 66 million years ago. Gold in volcanic terrain like this is usually tied to old vein systems and the gravels that drain them, so nearby washes tend to carry the color.

Mapped unit: Andesite
Age: 145–66 Ma (Cretaceous)
Rock types: andesite
Elevation: 4,710 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 Radersburg

Best months: March to October. Typical highs run 81°F in midsummer and 31°F in midwinter, with winter lows near 11°F.

Climate normals: NOAA 1991-2020 monthlies, TOWNSEND 3SE station (13 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 Radersburg

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 Radersburg.

Radersburg FAQ

Where is Radersburg?+

Radersburg is in Broadwater County, Montana, at 46.19213, -111.66446. Nearest road: Keating Gulch Road.

What rocks and minerals can you find at Radersburg?+

Radersburg is reported to produce Gold, Silver.

Is collecting allowed at Radersburg?+

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 Radersburg?+

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 Radersburg?+

The most comfortable months at Radersburg are March to October.

How do I get to Radersburg?+

Open the directions link to navigate to 46.19213, -111.66446 in Google Maps. The nearest road is Keating Gulch Road.

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