Unnamed (west of Awlinyak Creek)

The Unnamed (west of Awlinyak Creek) is a copper, bismuth, silver, and tin 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

Satelite View

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 (west of Awlinyak Creek)

Commodity

Primary: Copper
Primary: Bismuth
Primary: Silver
Primary: Tin
Secondary: Fluorine-Fluorite

Location

State: Alaska
District: Koyukuk

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

Ore: Malachite
Ore: Fluorite
Ore: Chalcopyrite

Comments

Comment (Exploration): Status = Inactive

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

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

Comment (Geology): Geologic Description = This occurrence consists of locally prominent copper staining in several cliffs near the contact of Devonian gneissic granite with Paleozoic chlorite schist and quartzite (Grybeck and Nelson, 1981). Grab samples that had visible fluorite and chlorite contained up to 3 ppm Ag, 300 ppm Bi, and 100 ppm Sn. A brief examination suggests that the occurrences are erratic and small. They probably are similar in origin to other Devonian contact-metamorphic deposits in nearby areas of the Brooks Range (Newberry and others, 1986).

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

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

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

References

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): 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

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