Unnamed (Omilak Creek)

The Unnamed (Omilak Creek) is a zinc, lead, 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 (Omilak Creek)

Commodity

Primary: Zinc
Primary: Lead
Primary: Silver

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: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Polymetallic veins
Model Name: Polymetallic replacement

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Oxidation of sulfide minerals.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Galena

Comments

Comment (Deposit): Model Number = 19a ?; 22c ?

Comment (Reference): Primary Reference = Briskey, 1983

Comment (Workings): Workings / Exploration = A small surface prospect trench is present here.

Comment (Deposit): Model Name = Polymetallic vein or replacement in marble (Cox and Singer, 1986; model 19a or 22c ?). May be similar to Foster propect (BN098).

Comment (Commodity): Ore Material = secondary lead minerals

Comment (Geology): Geologic Description = Oxidized galena in soil and gossan material occurs with ubiquitous fragments of black phyllite in a prospect trench (Briskey, 1983). This is within a northwest-trending zone of iron-oxide staining that is traceable at the surface for 800 feet. Assays of 24 samples of material in the prospect trench contained 20 ppm to 6.8 % Pb, 25 ppm to 3.4 % Zn, 10 to 2,200 ppm Cu, and 0.2 to 1,850 ppm Ag. The average of these samples was 0.84 % Pb, 0.37 % Zn, 221 ppm Cu, and 320 ppm Ag. This mineralization is localized near the axis and along the west limb of a large northwest plunging syncline in high grade metasedimentary rocks (Till and others, 1986).

Comment (Exploration): Status = Inactive

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

References

Reference (Deposit): Briskey, J.A., 1983, Summary of field observations on Seward Peninsula mineral deposits: U.S. Geological Survey, unpublished administrative report, 34 p.

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.

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