Gold Hill, Su

The Gold Hill, Su is a copper and 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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Site Name

Primary: Gold Hill, Su

Commodity

Primary: Copper
Primary: Gold
Secondary: Molybdenum

Location

State: Alaska
District: Valdez Creek

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-Au

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Phyllic and propyllitic.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Molybdenite
Ore: Pyrite
Gangue: Quartz
Gangue: Sericite

Comments

Comment (Geology): Geologic Description = The area of this prospect is underlain by intensely deformed and metamorphosed Lower Cretaceous and Upper Jurassic flysch (Wilson and others, 1998), cut by altered Lower Tertiary to Upper Cretaceous(?) diorite and quartz monzonite (Smith and others, 1988). The deposit consists of widely-spaced zones of sulfide minerals disseminated in the metasedimentary and altered intrusive rocks, and of stockwork quartz veinlets that carry molybdenite, chalcopyrite, pyrite, and sericite. Samples containing as much as 0.39 ounce of gold per ton have been reported (Balen and others, 1991).

Comment (Reference): Primary Reference = Balen and others, 1991

Comment (Deposit): Model Name = Porphyry Cu-Au (Cox and Singer, 1986; model 20c)

Comment (Workings): Workings / Exploration = Exploration has included soil sampling and trenching over a broad area. At least 2 shallow drill holes totalling 220 feet, were completed in the 1970s. Since then, at least 30 holes have been drilled on the prospect (D.L. Stevens, oral communication, 1999). Geophysical exploration has included a regional aeromagnetic survey over the prospect and surrounding area, as well as ground magnetics, IP, and EM. Samples containing as much as 0.39 ounce of gold per ton have been reported (Balen and others, 1991).

Comment (Geology): Age = Probably Late Cretaceous or younger.

Comment (Exploration): Status = Probably inactive

References

Reference (Deposit): Smith, T.E., Kline, G.L., Kline, J.T., and Coursey, N.D., 1975, Analyses of rock and stream-sediment samples, Healy A-2 quadrangle, south-central Alaska: Alaska Division of Geological and Geophysical Surveys Open-File Report AOF69, 2 sheets, scale 1:63,360.

Reference (Deposit): Balen, M.D., and others, 1991, Executive summary of the Bureau of Mines investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Special Publication, 43 p.

Reference (Deposit): Kurtak, J.M., Southworth, D.D., Balen, M.D., and Clautice, K.H., 1992, Mineral investigations in the Valdez Creek mining district, south-central Alaska: U.S. Bureau of Mines Open-File Report 1-92, 659 p., 2 plates, scale 1:250,000.

Reference (Deposit): Balen, M.D., 1990, Geochemical sampling results from the Bureau of Mines Investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 plates, 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.

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