The Firefly, Pigmay is a uranium mine located in San Juan county, Utah at an elevation of 6,719 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
Elevation: 6,719 Feet (2,048 Meters)
Commodity: Uranium
Lat, Long: 38.33194, -109.09806
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.
Firefly, Pigmay MRDS details
Site Name
Primary: Firefly, Pigmay
Commodity
Primary: Uranium
Secondary: Vanadium
Location
State: Utah
County: San Juan
District: Paradox District, La Sal Area
Land Status
Land ownership: National Forest
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.
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Method: Other
Years of Production:
Organization:
Significant: N
Deposit Size: L
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Canyon Lands
Physiographic Detail: Lisbon Prong - Salt Anticline Region
Mineral Deposit Model
Not available
Orebody
Form: LENS, TABULAR, IRREGULAR,
Structure
Type: L
Description: La Sal Creek Syncline
Alterations
Not available
Rocks
Name: Mudstone
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic
Name: Mudstone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Coffinite
Ore: Tyuyamunite
Ore: Carnotite
Ore: Torbernite
Ore: Uranophane
Ore: Uraninite
Ore: Montroseite
Gangue: Sphalerite
Gangue: Galena
Gangue: Pyrite
Gangue: Gypsum
Gangue: Limonite
Comments
Comment (Development): (F) DISCOVERED BY EXPLORATION DRILLING PROGRAM
Comment (Deposit): MUCH OF WORKINGS CAVED AND FLOODED.
Comment (Workings): CONNECTED BY DRIFT WITH LITTLE DON MINE IN TWO MILE CANYON, ALSO GRAY DAUN MINE.
References
Reference (Production): UGMS - STUDY - 1973
Reference (Reserve-Resource): JONES, H., 1977
Reference (Deposit): CARTER, W. D., AND GUALTIERI, J. L., 1965 , GEOLOGY AND URANIUM - VANADIUM DEPOSITS OF THE LA SAL QUADRANGLE, SAN JUAN CO., UTAH AND MONTROSE CO., COLO.: U.S.G.S. PROF. PAPER 508
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