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

Public accessBest spot3 mineralsAlbany County, WyomingUpdated June 2026
4 photos
Minerals reported
3
Elevation
8,000 ft
Best months
April to October

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.

Plan your visit

Generally open to casual rockhounding

State
Wyoming
Get directionsView on Google Maps

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Access note: The Laramie Mountains include National Forest, BLM, state, and private land; use surface-management maps and avoid collecting in closed recreation or cultural-resource areas.

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.

Best time to visit Laramie Mountains

Comfortable months (45 to 90°F highs)

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.

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.

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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:

Found at Laramie Mountains

Each name 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.

  • LaramieAlbany County, Wyoming · 15 mi awayGypsum
  • Chugwater CreekLaramie County, Wyoming · 20 mi awayBloodstone
  • Red ButtesAlbany County, Wyoming · 29 mi awayGypsum
  • Sportman LakeAlbany County, Wyoming · 32 mi awayGypsum
  • WheatlandPlatte County, Wyoming · 32 mi awayMoonstone, Labradorite
  • Copper King MineLaramie County, Wyoming · 34 mi awayBarite, Copper
  • Cooney HillsPlatte County, Wyoming · 35 mi awayGarnet
  • Como RidgeCarbon County, Wyoming · 36 mi awayPetrified Dinosaur Bone

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.

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