Unnamed (near headwaters of Humbolt Creek)

The Unnamed (near headwaters of Humbolt Creek) is a gold, 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 (near headwaters of Humbolt Creek)

Commodity

Primary: Gold
Primary: Lead
Primary: Silver
Secondary: Tin
Secondary: Zinc

Location

State: Alaska
District: Fairhaven

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

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Galena
Gangue: Quartz

Comments

Comment (Deposit): Model Name = Quartz and sulfide veins in schist

Comment (Exploration): Status = Inactive

Comment (Geology): Geologic Description = Sainsbury and others (1970, Table 2) give analytical data for several rock and pan concentrate samples from this locality. It is in an area of extensive tundra cover (Till and others, 1986) and only 2,500 feet southeast of another galena-bearing locality (BN052). The possibility exists that the samples reported from here are actually from the unnamed galena-bearing occurrence closer to Humbolt Creek (BN052). However, this occurrence is described separtely in keeping with the location given by Sainsbury and others (1970). Samples from this locality are described as galena in schist, stained float below galena prospect, quartz and galena, and cemented fault breccia (Sainsbury and others, 1970, Table 2). These samples contained up to 0.2 ppm Au, 150 ppm Ag, 500 ppm As, greater than 20,000 ppm Pb, 300 ppm Sb, 300 ppm Sn, and 1,500 ppm Zn. Epigenetic mineralization in this area is interpreted to have introduced into low grade, Lower Paleozoic metasedimentary rocks over buried parts of the Oonatut Granite Complex. The Oonatut Granite is part of the western Seward Peninsula tin granite suite (Hudson and Arth, 1983) and the polymetallic character of this mineralization may be reflective of the lead-zinc zone in tin deposit systems (Hudson, 1979).

Comment (Reference): Primary Reference = Sainsbury and others, 1970

Comment (Workings): Workings / Exploration = Shallow hand-dug prospect pits may be present.

Comment (Geology): Age = Probably Late Cretaceous; this occurrence may be related to emplacement and crystallization of the Oonatut Granite Complex. K/Ar ages for the Oonatut Granite Complex are about 70 my (Hudson, 1979).

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): Hudson, T.L., and Arth, J. G., 1983, Tin-granites of Seward Peninsula, Alaska: Geological Society of America Bulletin, v. 94, p. 768-790.

Reference (Deposit): Sainsbury, C.L., Hudson, T.L., Kachadoorian, Reuben, Smith, T.E., Richards, T.R., and Todd, W.C., 1970, Geology, mineral deposits, and geochemical and radiometric anomalies, Serpentine Hot Springs area, Seward Peninsula, Alaska: U.S. Geological Survey Bulletin 1312-H, p. H1-H19.

Reference (Deposit): Hudson, T.L., 1979, Igneous and metamorphic rocks of the Serpentine Hot Springs area, Alaska: U.S. Geological Survey Professional paper 1079, 27 p.

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