The Unnamed (flank of Dry Creek) is a lead, silver, and zinc 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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Unnamed (flank of Dry Creek) MRDS details
Site Name
Primary: Unnamed (flank of Dry Creek)
Commodity
Primary: Lead
Primary: Silver
Primary: Zinc
Secondary: Copper
Location
State: Alaska
District: Bonnifield
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: Massive sulfide, kuroko
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Footwall alteration zones containing chlorite and sericite.
Rocks
Role: Host
Age Type: Host Rock
Age Young: Early Mississippian
Age Old: Middle Devonian
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Galena
Gangue: Sericite
Gangue: Quartz
Gangue: Chlorite
Comments
Comment (Deposit): Model Name = Kuroko massive sulfide (Cox and Singer, 1986; model 28a)
Comment (Exploration): Status = Active?
Comment (Workings): Workings / Exploration = Surface exploration only.
Comment (Geology): Age = Mineralization was probably syngenetic with the Lower Mississippian to Middle Devonian host rocks.
Comment (Deposit): Other Comments = the deposit at this prospect is considered to be a satellite of the deposit at the Red Mountain prospect (HE122).
Comment (Geology): Geologic Description = The country rocks at this prospect are the Lower Mississippian to Middle Devonian Totatlanika Schist, composed predominantly of mafic and felsic metavolcanic and metavolcaniclastic rocks, pelitic schist, and minor marble (Wilson and others, 1998). The deposit consists of massive-sulfide lenses in schist (Cox and others, 1989). The lenses are mainly galena and sphalerite, accompanied by chlorite, quartz, and sericite. The schist in the footwall is altered to chlorite and sericite.
Comment (Reference): Primary Reference = Cox and others, 1989
References
Reference (Deposit): Nokleberg, W.J., and others, 1994, Metallogeny and major mineral deposits of Alaska and Metallogenic map of significant metalliferous lode deposits and placer districts of Alaska, in Plafker, G. and Berg, H.C., eds., The Geology of Alaska: Boulder, Colorado, Geological Society of America: The Geology of North America, v. G1, p. 855-904 and v. G1, Plate 11, scale 1:2,500,000.
Reference (Deposit): Cox, D.P., Light, T.D., Csejtey, Bela, Jr., and Campbell, D.L., 1989, Mineral resource assessment map of the Healy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map, MF-2058-A, scale 1:250,000.
Reference (Deposit): Wilson, F.H., Dover, J.H., Bradley, D.C., Weber, F.R., Bundtzen, T.K., and Haeussler, P.J., 1998, Geologic map of central (interior) Alaska: U.S. Geological Survey Open-File Report 98-133, 17 p., 2 sheetsm, scale 1:500,000.
Reference (Deposit): Nokleberg, W.J., Bundtzen, T.K., Berg, H.C., Brew, D.A., Grybeck, D.J., Robinson, M.S., Smith, T.E., and Yeend, W., 1987, Significant metalliferous lode deposits and placer districts of Alaska: U.S. Geological Survey Bulletin 1786, 104 p.
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