Best spot

Laramie Mountains: Agate & Chalcedony Rockhounding in Albany County, Wyoming

Updated June 2026

The Laramie Mountains add a southeastern public-land agate, chalcedony, and jasper stop to a Wyoming list otherwise dominated by Sweetwater and Green River Basin material. WSGS mineral references also place the range in a broader hard-rock context, which gives the locality more geologic range than an ordinary gravel-bar agate stop. Reported finds include agate, chalcedony, jasper. Below: coordinates, access notes, nearby spots, and trip-planning links.

Laramie Mountains photos

Public image records connected to this spot or its reported material.

4 photos

Quick details

Access: Public area
County: Albany County
State: Wyoming
Coordinates: 41.57325, -105.50087

Geology at Laramie Mountains

This spot sits on Laramide Anorthosite Complex--anorthosite and norite, mapped as anorthosite and norite that formed roughly 1600 to 1000 million years ago. Plutonic rock like this weathers slowly into grus and boulders, and the most productive collecting is typically in weathered zones and drainages.

Mapped unit: Laramide Anorthosite Complex--anorthosite and norite
Age: 1600–1000 Ma (Mesoproterozoic)
Rock types: anorthosite and norite
Elevation: 8,000 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 Laramie Mountains

Best months: April to October. Typical highs run 76°F in midsummer and 28°F in midwinter, with winter lows near 10°F. At about 8,000 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

Climate normals: NOAA 1991-2020 monthlies, SYBILLE RSCH UNIT station (15 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 Laramie Mountains

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 Laramie Mountains.

Across the state line from Laramie Mountains

Laramie Mountains 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.

Laramie Mountains FAQ

Where is Laramie Mountains?+

Laramie Mountains is in Albany County, Wyoming, at 41.57325, -105.50087.

What rocks and minerals can you find at Laramie Mountains?+

Laramie Mountains is reported to produce Agate, Chalcedony, Jasper.

Is collecting allowed at Laramie Mountains?+

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 Laramie Mountains?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Laramie Mountains?+

The most comfortable months at Laramie Mountains are April to October. At about 8,000 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

How do I get to Laramie Mountains?+

Open the directions link to navigate to 41.57325, -105.50087 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Wyoming

See all 82 Wyoming spots →

Open Laramie Mountains on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.