The Unknown (area north of Saratoga) is a uranium mine located in Carbon county, Wyoming.
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
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Unknown (area north of Saratoga) MRDS details
Site Name
Primary: Unknown (area north of Saratoga)
Secondary: Saratoga area (10254182, deleted)
Commodity
Primary: Uranium
Location
State: Wyoming
County: Carbon
District: Saratoga area
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Deposit
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Carnotite
Comments
Comment (Location): Saratoga area is divided into a northern and a southern area. Also see 10018824 for description of southern part.
Comment (General): Short description of this area on p. 54 of MINOBRAS, 1976: "Carnotite was first found in [T16N, R84W, Sec. 13, 14[ during 1953. This location and subsequent discoveries are from 5 to 7 miles south of Saratoga [...]. It has been found as coatings on boulders and cobbles, within piedmont gravels and in the underlying silicified masses." "The uranium mineralization probably resulted from ground-water migration. In grade, the uranium reported in the gravels was about 0.011% U3O8. The maximum concentration of 0.027% U3O8, was found in thin cherty and silicified masses." (It is not clear if the latter part about the grade pertains to the northern or southern area. See also 10018824.)
Comment (Deposit): Deposits classified as "desert evaporite" type (see Gregory and others, 2010, MS-94).
Comment (Production): There are no known productive mines in this northern area.
Comment (Deposit): From TEI-440, p. 179: " North of Saratoga, approximately in sections 15 and 22, T18N, R84W, a yellow uranium mineral reported to be carnotite occurs in the Browns Fork formation. At this locality, more than 300 feet of the formation is exposed. It consistes of light brown to gray fine-grained tuffaceous sandstone, interbedded with thin but persistent white limestone containing abundant black chalcedony. Uranium minerals coat fractures in the thick sandstone forming a prominent cliff on the north side of the North Platte River, in carbonaceous shale about 50 feet above the cliff-forming standstone, and in a white chalcedonic limestone. In every observed occurrence, the mineral does not appear to have penetrated the rock except along fractures."
References
Reference (Deposit): GEOL. SURV. OF WYO. BULL. 50, P. 193 MIN. RES. OF WYO., 1959
Reference (Deposit): CONSV. DIV. COMP. DATE, 10-00-1961
Reference (Deposit): Osterwald and others, 1966, Mineral resources of Wyoming: Wyoming Geological Survey Bulletin 50 [rev.], 267 p.
Pages: p. 210.
Reference (Deposit): USAEC-TEI-440, P. 179
Pages: p. 179.
Reference (Deposit): MINOBRAS, 1976, Uranium Guidebook for Wyoming, 63 p, and appendix.
Pages: p. 54.
Reference (Deposit): Gregory, R.W., Jones, R.W., and Cottingham, K.D., 2010, Uranium Map of Wyoming: Wyoming State Geological Survey Map Series 94, scale 1:500,000.
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