Unnamed (north of Inyuilak Creek)

The Unnamed (north of Inyuilak Creek) is a zinc, tin, copper, bismuth, 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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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Unnamed (north of Inyuilak Creek)

Commodity

Primary: Zinc
Primary: Tin
Primary: Copper
Primary: Bismuth
Primary: Silver

Location

State: Alaska
District: Shungnak

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: Sn skarn

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Workings): Workings / Exploration = Site briefly examined during regional geologic mapping by the USGS in the late 1970s.

Comment (Reference): Primary Reference = Grybeck and Nelson, 1981

Comment (Geology): Age = Devonian; related to the intrusion of Devonian pluton.

Comment (Geology): Geologic Description = This occurrence is a contact metamorphic deposit at the contact of Devonian granite and Paleozoic schist (Grybeck and Nelson, 1981). Selected samples contain up 5 ppm Ag, 100 ppm Bi, 1 percent Cu, 30 ppm Sn, and 700 ppm Zn. The deposit is related to intrusion of the granite and is similar to other contact-metamorphic deposits in the Brooks Range (Newberry and others, 1986).

Comment (Deposit): Model Name = Skarn (Cox and Singer, 1986; model 14b)

Comment (Deposit): Other Comments = Located within Gates of the Arctic National Park.

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Newberry, R.J., Dillon, J.T., and Adams, D.D., 1986, Regionally metamorphosed calc-silicate-hosted deposits of the Brooks Range, northern Alaska: Economic Geology, v. 81, p. 1728-1752

Reference (Deposit): Grybeck, D.J., and Nelson, S.W., 1981, Mineral deposit map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-F, 1 sheet, scale 1:250,000.

Reference (Deposit): Nelson, S.W., and Grybeck, D.J., 1980, Geologic map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-A, 2 sheets, scale 1:250,000.

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