The Bowser Creek-Northeast is a silver, gold, lead, 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
Elevation:
Commodity: Silver, Gold, Lead, Zinc
Lat, Long: 62.191, -153.69000
Map: View on Google Maps
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Bowser Creek-Northeast MRDS details
Site Name
Primary: Bowser Creek-Northeast
Commodity
Primary: Silver
Primary: Gold
Primary: Lead
Primary: Zinc
Secondary: Copper
Secondary: Iron
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: Skarn Zn-Pb
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Extensive ferricrete oxidation of pyrrhotite and marmatite-rich sulfide zones.
Rocks
Role: Associated
Age Type: Associated Rock
Age in Years: 60.400000+-
Dating Method: K-Ar
Material Analyzed: Quartz porphyry
Age Young: Tertiary
Analytical Data
Not available
Materials
Ore: Marmatite
Ore: Sphalerite
Ore: Pyrrhotite
Ore: Galena
Ore: Chalcopyrite
Gangue: Hedenbergite
Gangue: Clinopyroxene
Gangue: Epidote
Gangue: Chlorite
Comments
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Chronological age is for the Bowser Creek pluton.
Comment (Deposit): Model Name = Lead-zinc skarn (Cox and Singer, 1986; model 18c).
Comment (Reference): Primary Reference = Reed and Elliott, 1968 (C 559)
Comment (Geology): Age = Inferred to be Tertiary, based on a 60.4 Ma K-Ar age from quartz porphyry in the Bowser Creek pluton.
Comment (Geology): Geologic Description = The Bowser Creek-Northeast prospect is a north-trending, elongate mineral zone that averages 7 meters wide and about 300 meters long near a small body of quartz porphyry and related felsite dikes, which are satellite intrusions of the main Bowser Creek composite pluton (Bundtzen and others, 1988). The plutonic rocks intrude a limestone-rich section of the Dillinger subterrane (Bundtzen, Harris, and Gilbert, 1997); host rocks at the Bowser Creek Northeast prospect are Late Silurian to Lower Devonian in age. A prospect map was published by Reed and Elliott (1968, C 559). . According to Reed and Elliott (1968, C 559), the skarn typically consists of pyrrhotite and marmatite (iron-rich sphalerite) with abundant epidote, chlorite, clinopyroxene (hedenbergite), and quartz. Disseminated galena occurs in shear zones related to dike swarm activity. . Reed and Elliott (1968, C 559) reported values from chip sample traverses as high as 357.7 grams/tonne silver, 3.4 grams/ton gold, 2.44 percent copper, 24.00 percent lead, and 22.10 percent zinc. According to Bundtzen and others (1988), the average metallic content of several 5 meter chip samples taken across the the mineralized zone was 0.35 grams/tonne gold, 244.0 grams/tonne silver, 821 ppm copper, 12.13 percent lead, and 11.13 percent zinc.
Comment (Deposit): Other Comments = Part of a series of low temperature zinc-lead-silver skarns associated with Bowser Creek composite pluton (see MG066, MG068 prospects).
Comment (Workings): Workings / Exploration = The Bowser Creek-Northeast prospect was found by the late Bruce Reed during minerals investigations for the U.S. Geological Survey in the 1960s (Reed and Elliott, 1968, C 596). Reed and Elliott (1968, C 559) reported values from chip sample traverses as high as 357.7 grams/tonne silver, 3.4 grams/tonne gold, 2.44 percent copper, 24.00 percent lead, and 22.10 percent zinc. According to Bundtzen and others (1988), the average metallic content of several 5 meter chip samples taken across the mineralized zone was 0.35 grams/tonne gold, 244.0 grams/tonne silver, 821 ppm copper, 12.13 percent lead, and 11.13 percent zinc. No surface trenching or drilling have been conducted on the property.
References
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): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Iliamna, Lake Clark, Lime Hills, and McGrath quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-485, 101 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the McGrath quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-379, 1 sheet, 1:250,000 scale.
Reference (Deposit): Bundtzen, T.K., Kline, J.T., Smith, T.E., and Albanese, M.D., 1988, Geology of the McGrath A-2 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 91, 18 p., 1sheet, scale 1:63,360.
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.
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