The Unnamed (southeast of Jimmy Lake) is a uranium, lead, and thorium mine located in Alaska.
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:
Commodity: Uranium, Lead, Thorium
Lat, Long: 61.69528, -153.18972
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.
Unnamed (southeast of Jimmy Lake) MRDS details
Site Name
Primary: Unnamed (southeast of Jimmy Lake)
Commodity
Primary: Uranium
Primary: Lead
Primary: Thorium
Secondary: Zinc
Location
State: Alaska
District: McGrath
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Oxidation.
Rocks
Name: Hornblendite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene
Name: Hornblendite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Name: Hornblendite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Arsenopyrite
Ore: Galena
Ore: Sphalerite
Comments
Comment (Geology): Age = Tertiary. Uranium is enriched along fractures in Tertiary granite.
Comment (Commodity): Ore Material = unidentified uranium- and thorium-bearing minerals
Comment (Reference): Primary Reference = Reed and Miller, 1980
Comment (Workings): Workings / Exploration = Reconnaissance sampling has been completed in this area.
Comment (Geology): Geologic Description = Granite porphyry of the Tertiary Styx River pluton contains 14.8 ppm uranium and 38.3 ppm thorium, and grab samples of radioactive hornblende granite contain as much as 882 ppm uranium (Reed and Miller, 1980; Cobb and Reed, 1981). The uranium is enriched along iron-stained joint surfaces that also contain arsenopyrite, galena, and sphalerite(?). Purple fluorite is an abundant accessory mineral in the granite.
Comment (Commodity): Ore Material = unidentified uranium- and thorium-bearing minerals
Comment (Deposit): Model Name = Fracture-controlled, U-bearing veins in granite
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Cobb, E.H., and Reed, B.L., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Iliamna, Lake Clark, Lime Hills, and McGrath quadrangles, Alaska; Supplement to Open-File Report 76-485; Part A, Summaries to January 1, 1981: U.S. Geological Survey Open-File Report 81-1343-A, 25 p.
Reference (Deposit): Reed, B.L., and Miller, T.P., 1980, Uranium and thorium content of some Tertiary granitic rocks in the southern Alaska Range: U.S. Geological Survey Open-File Report 80-1052, 16 p.
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
