Mammoth Creek — Rockhounding in Garfield County, Utah

Mammoth Creek is a mapped rockhounding spot in Garfield County, Utah. Reported finds include onyx. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Garfield County
State: Utah
Nearest road: US 89
Coordinates: 37.62800, -112.45823

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.

Found at Mammoth Creek

Each chip links to all spots in the U.S. that produce that material.

Onyx

Nearby rockhounding spots

Other rockhounding spots within driving distance of Mammoth Creek.

Mammoth Creek FAQ

Where is Mammoth Creek?+

Mammoth Creek is in Garfield County, Utah, at 37.62800, -112.45823. Nearest road: US 89.

What rocks and minerals can you find at Mammoth Creek?+

Mammoth Creek is reported to produce Onyx.

Is collecting allowed at Mammoth Creek?+

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.

How do I get to Mammoth Creek?+

Open the directions link to navigate to 37.62800, -112.45823 in Google Maps. The nearest road is US 89.

More rockhounding in Utah

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Open Mammoth Creek on the map

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