Unnamed (northwest of headwaters of Humbolt Creek)

Occurrence in Alaska, United States with commodities Gold, Copper, Lead, Tin, Zinc

Geologic information

Identification information

Deposit ID 10307269
Record type Site
Current site name Unnamed (northwest of headwaters of Humbolt Creek)

Geographic coordinates

Geographic coordinates: -164.51342, 65.81933 (WGS84)
Relative position This occurrence is on a level spur, at 2,000 feet elevation, 1,000 feet northwest of the upstream termination of the west headwater tributary of Humbolt Creek. Humbolt Creek is a northeast-flowing tributary to Goodhope River. This location is 2,000 feet north of the continental divide and 5,000 feet north-northwest of ARDF locality BN048.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Lead Secondary
Tin Secondary
Zinc Secondary

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) The altered zones contain quartz veins and are commonly iron-oxide stained. Clay alteration may be present.

Nearby scientific data

(1) -164.51342, 65.81933

Comments on the geologic information

  • Geologic Description = Till and others (1986) show bedrock here to be part of a polydeformed metapelitic schist that may be Precambrian in age. Sainsbury and others (1970) indicate that rusty and quartz-veined metasedimentary rocks are present over parts of this ridge spur. This and other nearby altered zones (BN048, BN050, BN052) have been interpreted to be localized along normal faults (Sainsbury and others, 1970) that are structurally above subsurface parts of the Oonatut Granite Complex (Hudson, 1979) which outcrops 11,000 feet to the northwest. Samples of rust-stained quartz veins and brecciated quartz veins contain 0.02 to 0.06 ppm Au and up to 500 ppm As (Sainsbury and others, 1970, Table 2). Base metals were only weakly to moderately anomalous in these samples but two had tin contents of 200 ppm. The Oonatut Granite is part of the western Seward Peninsula tin granite suite (Hudson and Arth, 1983).
  • Age = Probably Late Cretaceous; this occurrence may be associated with emplacement and crystallization of the Oonatut Granite Complex. K/Ar ages for the Oonatut Granite Complex are about 70 my (Hudson, 1979).

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Fairhaven

Comments on the workings information

  • Workings / Exploration = Shallow hand-dug prospect pits may be present.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF BN049

Bibliographic references

  • 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.

  • 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.

  • 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.

  • 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.

Comments on the references

  • Primary Reference = Sainsbury and others, 1970

General comments

Subject category Comment text
Deposit Model Name = Quartz veins in schist

Reporter information

Type Date Name Affiliation Comment
Reporter 15-MAR-99 Travis L. Hudson Applied Geology