Unnamed

Occurrence in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10003310
MRDS ID A106053
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -162.23576, 55.16587 (WGS84)
Relative position Approximate location is about 2 mi (3.2 km) southeast of Mt. Dutton, near Belkofski Bay. Anomaly no. 71 of Christie (1974) and no. 11 of MacKevett and Holloway (1977, p. 9).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Pyrite Ore

Alteration

  • (Local) Alteration is absent to weakly propylitic as evidenced by the presence of epidote and chlorite.

Mineral occurrence model information

Model code 105
USGS model code 25a-d
Deposit model name Epithermal vein, generic
Mark3 model number 119

Nearby scientific data

(1) -162.23576, 55.16587

Comments on the geologic information

  • Geologic Description = Christie (1974) described a color anomaly and associated gossan developed in hornfelsed andesite and dacite east of a contact with a fresh, medium-grained, unpyritized quartz diorite pluton. Gossan forms an oval, roughly 2,000 by 1,200 ft (1,500 by 900 m), but it is not fully delineated. Within the color anomaly, there are several thin breccia zones which are highly leached. Color anomaly is due to the weathering of pyrite, which is disseminated or localized in fractures in concentrations up to 8 percent. Northwest of the gossan, very recent volcanic debris and young flows from Mt. Dutton cover a hidden gossan as evidenced by bright orange seeps and strong iron-oxide staining in creek.
  • Age = Pliocene or younger

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = Brief reconnaissance geologic mapping and collection of a few soil and silt samples reported by Christie (1974). Gold, silver, zinc, copper, and molybdenum were at background levels.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106053
USGS Alaska Resource Data File ARDF CB015

Bibliographic references

  • Deposit

    Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Comments on the references

  • Primary Reference = Christie, 1974

General comments

Subject category Comment text
Deposit Model Name = Epithermal gold vein
Deposit Other Comments = Sampling probably not adequate to evaluate for epithermal gold vein mineralization.

Reporter information

Type Date Name Affiliation Comment
Reporter 13-MAY-1994 G.D. DuBois U.S. Geological Survey
Reporter 13-MAY-1994 F.H. Wilson U.S. Geological Survey