The Welsh Shaft is a uranium mine located in Emery county, Utah at an elevation of 4,459 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: 4,459 Feet (1,359 Meters)
Commodity: Uranium
Lat, Long: 38.98056, -110.36722
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Welsh Shaft MRDS details
Site Name
Primary: Welsh Shaft
Commodity
Primary: Uranium
Secondary: Vanadium
Location
State: Utah
County: Emery
District: Green River Desert District
Land Status
Land ownership: BLM Administrative Area
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
Owner Name: Atlas Minerals Corp.
Production
Year: 1966
Material type: U
Description: Ap_Grade: ^.23 % U308
Year: 1965
Material type: U
Description: Ap_Grade: ^.25 % U3o8
Year: 1964
Material type: U
Description: Ap_Grade: ^.30 % U3o8
Year: 1963
Material type: U
Description: Ap_Grade: ^.33 % U3o8
Year: 1965
Material type: V
Description: Ap_Grade: ^.48 % V2o5
Year: 1964
Material type: V
Description: Ap_Grade: ^.56 % V2o5
Year: 1967
Material type: U
Description: Ap_Grade: ^.19 % U3o8
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Discovery Year: 1956
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: L
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Canyon Lands
Mineral Deposit Model
Not available
Orebody
Form: PINCH AND SWELL, TABULAR, LENTICULAR
Structure
Type: R
Description: San Rafael Swell, Uinta Basin, Paradox Fold And - Fault Belt
Type: L
Description: Periodic Folds In Sub - Morrison Sediments Saleratus Graben.
Alterations
Alteration Type: L
Alteration Text: Bleaching In Mudstone And Sandstone
Rocks
Name: Sandstone
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic
Name: Sandstone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: WET ANALYSIS - .265% U3O8, .125% V2O5
Materials
Ore: Tyuyamunite
Ore: Coffinite
Ore: Uraninite
Ore: Montroseite
Gangue: Limonite
Gangue: Pyrite
Gangue: Calcite
Comments
Comment (Workings): THE LENGTH OF THE WORKINGS IS PART OF THE TOTAL WORKINGS LISTED FOR #7 INCLINE GROUP (19,605 FT.) SINCE THE WELSH SHAFT WORKINGS ARE CONNECTED TO THEM.
Comment (Deposit): THE DEPOSITS ARE ELONGATE IN THE DIRECTION OF PALEOCHANNELS.
Comment (Geology): MINERALIZATION IS LARGELY CONFINED TO PALEOCHANNELS AND IS CLOSELY RELATED TO PLANT REMAINS WHICH HAVE BEEN PARTIALLY OR WHOLLY REPLACED BY URANIUM AND/OR VANADIUM MINERALS.
Comment (Location): MORE EXACT MERIDIAN LOCATION SW 1/4 SW 1/4 SE 1/4 SEC. 15, T 21S, R 14E
Comment (Production): ADDITIONAL VANADIUM FIGURE GIVEN IN SAME FORMAT AS D7 : V ACC 3.130 LB IN 1966 . 326 TONS AT .48 % V2O5 ; CUMULATIVE VANADIUM PRODUCTION ( 31,233 LBS ) G8A IS COMBINED WITH PRODUCTION FROM CALYX #2
Comment (Development): L60 ECONOMIC STUDY (1957), ECONOMIC STUDY (1975 - 76)
References
Reference (Deposit): STOKES, W. L., 1952, LOWER CRETACEOUS IN COLORADO PLATEAU: AAPG BULLETIN, VOL. 36 PP. 1766 - 1776
Reference (Deposit): 1956 RECON IAPG - 7TH ANN. FIELD CONF.
Reference (Deposit): 1957 OTHER USAEC - UNPUBLISHED REPORT RME - 98
Reference (Deposit): 1976 OTHER UGMS - BULLETIN (UNPUBLISHED)
Reference (Deposit): JENSEN, H. N., 1953, RECONNAISSANCE OF THE SAN RAFAEL RIVER AREA, EMERY CO., UT.: USAFC RME - 38, MILLION, I., 1957, RECONNAISSANCE OF AND INVESTIGATIONAL DRILLING FOR URANIUM DEPOSITS IN THE SAN RAFAEL RIVER DESERT, UTAH: USAEC RME - 102
Reference (Production): UGMS STUDY - 1973
Reference (Deposit): CRAIG, L. C., AND D. D. DICKEY, 1956, JURASSIC STRATA OF SOUTHEASTERN UTAH AND SOUTHWESTERN COLO.; IAPG GUIDEBOOK 7TH ANNUAL FIELD CONF. PP. 93 - 104
Reference (Deposit): YOUNG, R. G. AND OTHERS, 1957, GEOLOGY OF THE SAN RAFAEL RIVER DESERT MINING DISTRICT, EMERY AND GRAND CO., UTAH: USAEC RME - 98
Reference (Deposit): TRIMBLE, L. M. AND H. H. DOELLING, 1976, GEOLOGY AND URANIUM ORE DEPOSITS OF THE SAN RAFAEL RIVER MINING AREA: UTAH GEOL. AND MIN. SUR. BULL. (UNPUBLISHED)
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