Jelm Mountain: Bismutite & Bismuth Rockhounding in Albany County, Wyoming

Updated June 2026

Jelm Mountain is a mapped rockhounding spot in Albany County, Wyoming. Reported finds include bismutite, bismuth. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Albany County
State: Wyoming
Nearest road: Jelm Mountain Road
Postcode: 82063
Coordinates: 41.07612, -105.99148

Geology at Jelm Mountain

This spot sits on ground mapped as Metasedimentary and metavolcanic rocks that formed roughly 2500 to 1600 million years ago. Volcanic ground like this weathers into rocky slopes and float, and fresh exposures in cuts and drainages are usually the most productive places to look.

Mapped unit: Metasedimentary and metavolcanic rocks
Age: 2500–1600 Ma (Paleoproterozoic)
Elevation: 8,700 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 Jelm Mountain

Best months: April to October. Typical highs run 77°F in midsummer and 31°F in midwinter, with winter lows near 4°F. At about 8,700 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

Climate normals: NOAA 1991-2020 monthlies, HOHNHOLZ RCH station (7 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 Wyoming
Wyoming State Geological Survey
Fossil Butte National Monument
Community submissions reviewed against published agency rules

Found at Jelm Mountain

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 Jelm Mountain.

Across the state line from Jelm Mountain

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

Jelm Mountain FAQ

Where is Jelm Mountain?+

Jelm Mountain is in Albany County, Wyoming, at 41.07612, -105.99148. Nearest road: Jelm Mountain Road.

What rocks and minerals can you find at Jelm Mountain?+

Jelm Mountain is reported to produce Bismutite, Bismuth.

Is collecting allowed at Jelm Mountain?+

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 Jelm Mountain?+

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 Jelm Mountain?+

The most comfortable months at Jelm Mountain are April to October. At about 8,700 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

How do I get to Jelm Mountain?+

Open the directions link to navigate to 41.07612, -105.99148 in Google Maps. The nearest road is Jelm Mountain Road.

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