The Upper Nugget Creek is a gold 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
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Upper Nugget Creek MRDS details
Site Name
Primary: Upper Nugget Creek
Commodity
Primary: Gold
Secondary: Arsenic
Location
State: Alaska
District: Yentna
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification (quartz veining) (Clark and Hawley,1968).
Rocks
Name: Mafic Intrusive Rock
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Arsenopyrite
Ore: Gold
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Workings consist of two short adits and a shallow prospect pit (Clark and Hawley, 1968).
Comment (Deposit): Other Comments = Also see Bradley Scheelite; Bird Creek (TL036).
Comment (Geology): Geologic Description = Upper Nugget Creek drains an area underlain by Mesozoic argillite and graywacke cut by a roughly circular, Tertiary (?) felsite porphyry body about 200 feet in diameter (Clark and Hawley,1968). Minor gold values have been returned from thin, sparsely distributed quartz-arsenopyrite veinlets which cut the porphyry. The veinlets are weakly mineralized at about 0.04 ppm gpld. Gold also occurs very sparsely on the joint surfaces of the rocks (Clark and Hawley, 1968).? See also Bradley Scheelite; Bird Creek (TL036).
Comment (Reference): Primary Reference = Clark and Hawley, 1968
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a).
Comment (Geology): Age = Tertiary (Clark and Hawley,1968).
References
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Reed, B.L., Nelson, S.W., Curtin, G.C., and Singer, D.A., 1978, Mineral resources map of the Talkeetna Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-870-D, 1 sheet, scale 1:250,000.
Reference (Deposit): C.C. Hawley and Associates, Inc., 1978, Mineral appraisal of lands adjacent to Mt. McKinley National Park, Alaska: U.S. Bureau of Mines Open-File Report 24-78, 275 p., 7 plates.
Reference (Deposit): Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, scale 1:250,000.
Reference (Deposit): Clark, A.L., and Cobb, E.H., 1972, Metallic mineral resources map of the Talkeetna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-369, 1 sheet, scale 1:250,000.
Reference (Deposit): Clark, A.L., and Hawley, C.C., 1968, Reconnaissance geology, mineral occurrences, and geochemical anomalies of the Yentna district, Alaska: U.S. Geological Survey Open-File Report 68-35, 64 p.
Reference (Deposit): Hawley, C.C., and Clark, A.L., 1973, Geology and mineral deposits of the upper Chulitna district, Alaska: U.S. Geological Survey Professional Paper 758-A, p. 1-10, 2 sheets, scale 1:250,000 and 1:500,000.
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