Upper and Lower Cloys

The Upper and Lower Cloys is a uranium mine located in Piute county, Utah at an elevation of 6,850 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: Upper and Lower Cloys  

State:  Utah

County:  Piute

Elevation: 6,850 Feet (2,088 Meters)

Commodity: Uranium

Lat, Long: 38.50194, -112.21500

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Satelite image of the Upper and Lower Cloys

Upper and Lower Cloys MRDS details

Site Name

Primary: Upper and Lower Cloys


Primary: Uranium
Tertiary: Fluorine-Fluorite


State: Utah
County: Piute
District: Henry District

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.


Not available


Type: Underground


Owner Name: Energy Fuels


Not available


Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1959
Discovery Year: 1959
Discovery Method: Ore-Mineral In Place
Years of Production:
Significant: N
Deposit Size: M


General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: High Plateaus Of Utah
Physiographic Detail: Tushar Mountains

Mineral Deposit Model

Not available




Type: L
Description: Cloys Fault


Alteration Type: L
Alteration Text: Argillic Alteration


Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene

Analytical Data

Not available


Ore: Fluorite


Comment (Location): SECTION SUBDIVISION: SE 1/4 , SE 1/4 , SE 1/4 SEC. 27


Reference (Reserve-Resource): TRIMBLE, L. M., 1978

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