Dave's Vein

Prospect in Alaska, United States with commodities Silver, Gold

Geologic information

Identification information

Deposit ID 10308141
Record type Site
Current site name Dave's Vein

Geographic coordinates

Geographic coordinates: -160.67741, 55.18523 (WGS84)
Relative position The map site of this prospect is at an elevation of about 300 feet, just above the beach on the east shore of Acheredin Bay on Unga Island (Wilson and others, 1988, locality 39). The site is about 0.15 mile south-southwest of hill 710. The location is accurate to within 1,000 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) The wall rock exhibits strong argillic alteration accompanied by pyrite. Some silicification has also been noted (Peterson and others, 1982).

Nearby scientific data

(1) -160.67741, 55.18523

Comments on the geologic information

  • Geologic Description = This prospect, discovered, mapped, and sampled in 1980 by Resource Associates of Alaska, consists of a 6-foot-wide, northeast-striking, iron-stained quartz vein in argillized, silicified, and pyritized andesite. The andesite is part of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The vein is exposed for 200 feet along strike and is associated with a knob of silicified andesite. It may merge with the Altair vein (PM091) farther inland. In 1982 UNC Teton Exploration Drilling Company conducted a VLF-EM survey, and trenched and sampled the prospect. Ranges of metal values from trench channel samples are as follows: 0.025 to 0.17 ppm gold, 0.5 to 4.2 ppm silver, 4 to 24 ppm copper, 5 to 36 ppm lead, 1 to 20 ppm zinc, 16 to 152 ppm arsenic, and 0.06 to 0.6 ppm mercury (Peterson and others, 1982).
  • Age = Eocene or younger.

Economic information

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = In 1980 Resource Associates of Alaska mapped and sampled the prospect. In 1982 UNC Teton Exploration Drilling Company cut 168 feet of trench, sampled the prospect, and conducted a VLF-EM survey. Twelve trench channel samples assayed as much as 0.17 ppm gold and 4.2 ppm silver over a 120-foot zone. Thirteen grab samples assayed as much as 1.8 ppm gold and 210 ppm silver.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF PM071

Bibliographic references

  • Deposit

    Peterson, R.J., Lemmers, J., Handverger, P., Gallagher, J., Pilcher, R., East, J., Macleod, T., Bartels. E., 1982, Geology and precious metals potential Unga, Popof, and Korovin Islands, Shumagin Group, Aleutian Chain, Alaska: UNC Teton Exploration Drilling Company report, 127 p., 5 map sheets, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)

  • Deposit

    Pilcher, S.H., 1986, Unga project: Battle Mountain Exploration Company report, 33 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)

  • Deposit

    Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.

  • Deposit

    Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Peterson and others, 1982

General comments

Subject category Comment text
Deposit Model Name = Epithermal gold vein
Deposit Other Comments = This site is located on land patented by, or interim-conveyed to, the Aleut Corporation.

Reporter information

Type Date Name Affiliation Comment
Reporter 15-JAN-01 S.H. Pilcher U.S. Geological Survey