Unnamed (at headwaters of Burro Creek)

The Unnamed (at headwaters of Burro Creek) is a copper 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

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Site Name

Primary: Unnamed (at headwaters of Burro Creek)

Commodity

Primary: Copper
Primary: Silver

Location

State: Alaska
District: Juneau (Skagway subdistrict)

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Pyrite
Gangue: Quartz

Comments

Comment (Reference): Primary Reference = Redman and others, 1984

Comment (Deposit): Model Name = Quartz-sulfide vein (Cox and Singer, 1986; model 22c?).

Comment (Exploration): Status = Inactive

Comment (Geology): Geologic Description = According to Redman and others (1984), this occurrence consists of quartz vein float from the Burro Creek fault zone where it cuts biotite quartz monzonite of the Ferebee pluton at the head of Burro Creek. The quartz-vein float contains pyrite and chalcopyrite A sample contained 1,580 ppm copper, 50.5 ppm silver, 170 ppm lead, and 128 ppm molybdenum. The veins were found only as float along the fault trace. The mineralization must be younger than the Late Cretaceous to early Paleocene Ferebee pluton (Redman and others, 1984).

Comment (Geology): Age = Younger than Late Cretaceous based on the age of intrusive rocks cut by the Burro Creek fault (Redman and others, 1984).

References

Reference (Deposit): Redman, E.C., Retherford, R.M., and Hickok, B.D., 1984, Geology and geochemistry of the Skagway B-2 Quadrangle, southeastern Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 84-31, 34 p., 4 sheets, scale 1:40,000.

Reference (Deposit): Wells, D.E., Pittman, T.L., Brew, D.A. and Douglass, S.L., 1986, Map and description of the mineral deposits in the Juneau, Taku River, Atlin, and part of the Skagway quadrangles, Alaska; U.S. Geological Survey Open-File Report 85-717, 332 p.

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