The Orr Lease is a uranium mine located in Campbell 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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Orr Lease MRDS details
Site Name
Primary: Orr Lease
Secondary: Albert Orr Ranch
Secondary: KISU
Commodity
Primary: Uranium
Location
State: Wyoming
County: Campbell
District: Pumpkin Buttes
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: K.I.S.U. Mining Co.
Info Year: 1958
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Stratabound
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Missouri Plateau, Unglaciated
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Sandstone
Role: Host
Age Type: Host Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Not available
Comments
Comment (Production): Produced less than 100 tons as of Jan. 1958.
Comment (Deposit): UP TO .76% U OXIDE.
Comment (Development): Inactive as of 1958.
Comment (Location): Orr Ranch is east of the Orr Group (see #4 and #5 on pl. 6, in MINOBRAS, p. 18)
References
Reference (Deposit): CONSV. DIV. COMP. DATE, 10-27-1961
Reference (Deposit): USAEC-DEB-P-2-2679
Reference (Deposit): Mrak, Vernon A., 1958, Uranium deposits in the Tertiary sediments of the Powder River Basin, Wyoming: Wyoming Geological Association 13th Field Trip Guidebook, p. 233-240.
Pages: p. 236.
Reference (Deposit): MINOBRAS, 1976, Uranium Guidebook for Wyoming.
Pages: p. 17-18, #4 , #5.
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