Unnamed (headwaters of North Fork, Mosquito Creek)

The Unnamed (headwaters of North Fork, Mosquito Creek) is a lead, zinc, 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 (headwaters of North Fork, Mosquito Creek)

Commodity

Primary: Lead
Primary: Zinc
Primary: Silver
Secondary: Antimony
Secondary: Tin

Location

State: Alaska
District: Council

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

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: These occurrences are oxidized, gossanous zones in metacarbonate rocks.

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Workings): Workings / Exploration = None are known, some shallow hand dug prospecting pits may be locally present in this area.

Comment (Deposit): Model Name = Sulfide veins and/or replacements in carbonate rocks

Comment (Geology): Geologic Description = Two samples of apparently small, iron-stained zones in metamorphosed carbonate rocks were collected by Miller and Grybeck (1973) near this location. A composite grab sample of iron-stained carbonate contained 70 ppm Ag, 2,000 ppm As, 0.1 ppm Au, 200 ppm Cu, greater than 20,000 ppm Pb, 700 ppm Sb, 500 ppm Sn, and 7,000 ppm Zn. A grab sample of gossan in calcareous metasedimentary rock contained 3 ppm Ag, 3,000 ppm As, 200 ppm Cu, 70 ppm Mo, 1,500 ppm Pb, and greater than 10,000 ppm Zn. These occurrences are in lower Paleozoic metasedimentary rocks (Till and others, 1986).

Comment (Geology): Age = Cretaceous ; Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age.

Comment (Reference): Primary Reference = Miller and Grybeck, 1973

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.

Reference (Deposit): Gamble, B.M., 1988, Non-placer mineral occurrences in the Solomon, Bendeleben, and southern part of the Kotzebue quadrangles, western Alaska: U.S. Geological Survey Map MF-1838-B, 13 p., 1 sheet, scale 1:250,000.

Reference (Deposit): Miller, T.P., and Grybeck, D.J., 1973, Geochemical survey of the eastern Solomon and southeastern Bendeleben quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 553, 115 p.

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