Cedar Mountain area: Agate & Anhydrite Rockhounding in Emery County, Utah

Updated June 2026

Cedar Mountain area is a mapped rockhounding spot in Emery County, Utah. Reported finds include agate, anhydrite, carnotite, chalcedony, jasper, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Emery County
State: Utah
Nearest road: Green River Cutoff
Coordinates: 39.15991, -110.61575

Geology at Cedar Mountain area

This spot sits on ground mapped as Carmel Formation that formed roughly 175 to 160 million years ago. Tough silica like agate and jasper typically survives weathering and collects as float in drainages and gravel.

Mapped unit: Carmel Formation
Age: 175–160 Ma (Middle Jurassic)
Elevation: 6,210 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 Cedar Mountain area

Best months: February to November. Typical highs run 89°F in midsummer and 38°F in midwinter, with winter lows near 8°F.

Climate normals: NOAA 1991-2020 monthlies, CASTLE DALE station (22 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 Utah — Rockhounding overview
Utah Geological Survey — collecting guidelines
SITLA — surface use rules
Community submissions reviewed against published agency rules

Found at Cedar Mountain area

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 Cedar Mountain area.

Cedar Mountain area FAQ

Where is Cedar Mountain area?+

Cedar Mountain area is in Emery County, Utah, at 39.15991, -110.61575. Nearest road: Green River Cutoff.

What rocks and minerals can you find at Cedar Mountain area?+

Cedar Mountain area is reported to produce Agate, Anhydrite, Carnotite, Chalcedony, Jasper, Gypsum, Uraninite.

Is collecting allowed at Cedar Mountain area?+

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 Cedar Mountain area?+

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 Cedar Mountain area?+

The most comfortable months at Cedar Mountain area are February to November.

How do I get to Cedar Mountain area?+

Open the directions link to navigate to 39.15991, -110.61575 in Google Maps. The nearest road is Green River Cutoff.

More rockhounding in Utah

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Open Cedar Mountain area on the map

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