The Ozzna Creek is a zinc, lead, copper, gold, and silver 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: Zinc, Lead, Copper, Gold, Silver
Lat, Long: 62.295, -153.94611
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Ozzna Creek MRDS details
Site Name
Primary: Ozzna Creek
Commodity
Primary: Zinc
Primary: Lead
Primary: Copper
Primary: Gold
Primary: Silver
Secondary: Molybdenum
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: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Porphyry Cu-Mo
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Pyritic and sericitic alteration in breccia pipe.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Galena
Ore: Molybdenite
Ore: Pyrite
Ore: Sphalerite
Gangue: Sericite
Gangue: Epidote
Gangue: Quartz
Comments
Comment (Exploration): Status = Inactive
Comment (Commodity): Gangue = Carbonate
Comment (Workings): Workings / Exploration = Only surface sampling has been completed at the prospect. Selected samples from the quartz-pyrite-sericite halo contain up to 0.08 percent copper, 150 ppm molybdenum, 1.50 percent lead, 1.00 percent zinc, 14.6 grams/tonne silver, and 2.48 grams/tonne gold (Bundtzen, Kline, and Clough, 1982).
Comment (Deposit): Model Name = Porphyry copper molybdenum (?) (Cox and Singer, 1986; model 21a).
Comment (Deposit): Other Comments = the magnetic anomaly that rims the quartz monzonite breccia pipe is similar to a geophysical feature found in porphyry copper systems throughout the North American Cordillera.
Comment (Reference): Primary Reference = Reed and Elliott, 1968 (C 596)
Comment (Geology): Geologic Description = The Ozzna creek prospect consists of base metal sulfide veins and replacement deposits within an extensive quartz-sericite-pyrite halo rimming a 450 meter wide, rugged, quartz monzonite breccia pipe, which forms the core of a distinctive, precipitous, 7,205-foot -high (2,197 m) peak. A biotite separate from the quartz monzonite breccia pipe yielded a K-Ar age of 58 Ma. (Solie and others, 1991). A pronounced magnetic high rims the edge of the breccia pipe (Rob Kell, written communication, 1983).? the vein and replacement deposits consist of small pods and lenses of pyrrhotite, sphalerite, argentiferous galena, and pyrite in a gangue of carbonate, epidote, and quartz along shear zones in felsic dikes and igneous breccia. Most massive sulfide pods range from 0.2 to 1.5 meters in width and 0.5 to 6.0 meters in length. Selected samples yielded 1,623.0 to 2,189.0 grams/tonne silver (Reed and Elliott, 1968, C 596).? An extensive quartz-sericite-pyrite halo that surrounds the quartz monzonite breccia pipe ranges from 15 to 60 meters wide, and can be traced along strike for about 450 meters. Disseminated chalcopyrite and traces of molybdenite occur in pyrite-rich igneous breccia. Selected samples from the quartz-sericite-pyrite halo contain up to 0.08 percent copper, 150 ppm molybdenum, 1.50 percent lead, 1.00 percent zinc, 14.6 grams/tonne silver, and 2.48 grams/tonne gold (Bundtzen, Kline, and Clough, 1982; Bundtzen, Harris, and Gilbert, 1997).
Comment (Geology): Age = Early Tertiary (58 Ma) , based on K-Ar biotite age of intrusion.
References
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Bundtzen, T.K., Harris, E.E., and Gilbert, W.G., 1997, Geologic Map of the eastern McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 97-14, 34 pages, one sheet, scale 1:125,000.
Reference (Deposit): Reed, B.L. and Elliott, R.L., 1968, Geochemical anomalies and metalliferous deposits between Windy Fork and Post River, southern Alaska: U.S. Geological Survey Circular 596, 22 pages.
Reference (Deposit): Solie, D.N., Bundtzen, T.K., and Gilbert, W.G., 1991, K-Ar ages of igneous rocks in the McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Public Data File Report 160, 17 pages, one sheet, 1:250,000 scale.
Reference (Deposit): Bundtzen, T.K., Kline, J.T., and Clough, J.G., 1982, Preliminary geologic map of the McGrath B-2 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Open-File report 149, 22 pages, one sheet, scale 1:63,360.
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