The The Dome is a lead and copper 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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The Dome MRDS details
Site Name
Primary: The Dome
Commodity
Primary: Lead
Primary: Copper
Location
State: Alaska
District: Chistochina
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
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Quartz-sericite-pyrite alteration of the intrusive rocks is present on the northeast side of The Dome.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Galena
Ore: Pyrite
Gangue: Limonite
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Mineral deposits exposed in shallow pits (Richter, 1964, 1966).
Comment (Reference): Primary Reference = Richter, 1966
Comment (Exploration): Status = Inactive
Comment (Geology): Geologic Description = The Dome prospect consists of veins and disseminated ore minerals in hornfelsed flows and possibly interbedded tuffs of the Pennsylvanian, Slana Spur Formation and in intrusive rocks of the Pennsylvanian to Permian, Ahtell Pluton (Richter, 1966; Richter Lanphere and Matson 1975; and Beard and Barker, 1989).? the silicic border phase of the Ahtell pluton contains stockworks of weakly metalliferous, quartz-calcite veins. The veins are as much as one foot thick and occupy joint sets. The predominant joint set strikes slightly west of north and dips moderately to the west. The veins contain sparse disseminated pyrite, chalcopyrite, and galena. The volcanic rocks also contain limonitic, hornfelsed volcanic rocks; the limonite probably formed by the oxidation of pyrite and chalcopyrite. A composite sample of an area about 400 feet by 100 feet in size contained from 0.05 to 0.1 percent copper (Richter, 1966, p. 31).
Comment (Geology): Age = Emplaced subseqent to or is related to the border phase of the Pennsylvanian to Permian, Ahtell pluton.
Comment (Deposit): Model Name = Porphyry Cu (Cox and Singer, 1986; model 17)
References
Reference (Deposit): Richter, D.H., 1966, Geology of the Slana district on south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 2l, 36b p., 3 sheets, scale 1:63,360.
Reference (Deposit): Richter, D.H., 1975, Reconnaissance geologic map of the Nabesna B-3 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-904, scale 1:63,360.
Reference (Deposit): Richter, D.H., Lanphere, M.A., and Matson, N. A., Jr., 1975, Granite plutonism and metamorphism, Eastern Alaska Range, Alaska: Geological Society of American Bulletin, v. 86, p. 819-820.
Reference (Deposit): Richter, D.H., 1964, Geology and mineral deposits of the Ahtell Creek area, Slana District, south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 6, 17 p., 1 sheet, scale 1:31,680.
Reference (Deposit): Richter, D.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Gulkana quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-419, 1 sheet, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Gulkana quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1247, 36 p.
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): Beard, J.A., and Barker, Fred, 1989, Petrology and tectonic significance of gabbro, tonalites, shoshonites, and anorthosites in a late Paleozoic arc-root complex in the Wrangellia terrane, Southern Alaska: Journal of Geology, v. 97, p. 667-683.
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.
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