Shoshoni: Aquamarine & Beryl Rockhounding in Fremont County, Wyoming

Updated June 2026

Shoshoni is a mapped rockhounding spot in Fremont County, Wyoming. Reported finds include aquamarine, beryl, feldspar, muscovite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Fremont County
State: Wyoming
Coordinates: 43.20231, -108.06412

Geology at Shoshoni

This spot sits on Wind River Formation, mapped as claystone that formed roughly 56 to 34 million years ago. Sedimentary rock like this erodes unevenly, so the most productive collecting is typically along fresh cuts, badland slopes, and active drainages.

Mapped unit: Wind River Formation
Age: 56–34 Ma (Eocene)
Rock types: claystone
Elevation: 5,240 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 Shoshoni

Best months: March to October. Typical highs run 89°F in midsummer and 26°F in midwinter, with winter lows near 0°F.

Climate normals: NOAA 1991-2020 monthlies, SHOSHONI station (3 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 Shoshoni

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 Shoshoni.

Shoshoni FAQ

Where is Shoshoni?+

Shoshoni is in Fremont County, Wyoming, at 43.20231, -108.06412.

What rocks and minerals can you find at Shoshoni?+

Shoshoni is reported to produce Aquamarine, Beryl, Feldspar, Muscovite.

Is collecting allowed at Shoshoni?+

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 Shoshoni?+

A rock hammer, a pry bar, gloves, and safety glasses suit pegmatite ground. Work weathered zones and check dump piles; coarse crystals often sit in decomposed rock.

When is the best time to visit Shoshoni?+

The most comfortable months at Shoshoni are March to October.

How do I get to Shoshoni?+

Open the directions link to navigate to 43.20231, -108.06412 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Wyoming

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Open Shoshoni on the map

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