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Wilson Point

Prospect, Inactive

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Commodities and mineralogy

Main commodities Ag; Au
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale CV
Quadrangle map, 1:63,360-scale C-5
Latitude 60.66
Longitude -145.67
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the north shore of Nelson Bay, about 1000 feet northeast of VABM Bluff. It is in the W1/2 sec. 13, T. 14 S., R. 3 W., of the Copper River Meridian. Site location accurate to within 0.5 mile. Site corresponds to loc. 24 in Cobb (1972: MF-392). It also corresponds to loc. C-28 in Jansons and others (1984), but their plotted position of the site is in error.

Geologic setting

Geologic description

The Wilson Point prospect is in graywacke and slate of the Tertiary Orca Group (Nelson and others, 1985). Schrader (1900) reported numerous quartz stringers having assay values of 1.25 oz. Au/ton and 3 oz. Ag/ton. Jansons and others (1984) report a four-foot-wide, 20-foot-long quartz-cemented graywacke breccia. Analyses of their samples showed <0.03 ppm to 0.05 ppm Au and <0.1 ppm Ag. However, their site location does not agree with that of earlier reports.
Geologic map unit (-145.67194812887, 60.6594507729698)
Mineral deposit model Chugach-type low-sulfide Au-quartz veins (Bliss, 1992; Goldfarb and others, 1986)
Age of mineralization Tertiary based on the age of the mineralizing event (Goldfarb and others, 1992).

Production and reserves

Workings or exploration Minor surface sampling (Schrader, 1900). Analyses of recent samples showed <0.03 ppm to 0.05 ppm Au and <0.1 ppm Ag (Jansons and others, 1984).
Indication of production None

Additional comments

Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.

References

MRDS Number A010437

References

Bliss, J.D., 1992, Grade and tonnage model of Chugach-type low-sulfide Au-quartz veins: U.S. Geological Survey Bulletin 2004, p. 44-46.
Cobb, E.H., 1972, Metallic mineral resources map of the Cordova quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-392, 1 sheet, scale 1:250,000.
Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Cordova quadragle, Alaska: U.S. Geological Survey Open-file Report OF 79-973, 73 p.
Goldfarb, R.J., Case, J.E., Plafker, George, and Winkler, G.R., 1992, Maps showing areas of potential for mineral resources in the Cordova and northern Middleton Island 1-degree x 3-degree quadrangles, southern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2190, 1 sheet, scale 1:250,000.
Goldfarb, R.J., Leach, D.L., Miller, M.L., and Pickthorn, W.J., 1986, Geology, metamorphic setting, and genetic constraints of epigenetic lode-gold mineralization within the Cretaceous Valdez Group, south-central Alaska, in Keppie, J.D., Boyle, R.W., and Haynes, S.J., eds., Turbidite-hosted gold deposits: Geological Association of Canada Special Paper 32, p. 87-105.
Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Mineral Land Assessment 5-84, 218 p., 2 sheets, scale 1:250,000.
Schrader, F.C., 1900, A reconnaissance of a part of Prince William Sound and the Copper River district, Alaska, in 1898 in Walcott, C.D., 1900, Twentieth annual report of the United States Geological Survey, 1898-1899: Part VII - explorations in Alaska in 1898: U.S. Geological Survey Annual Report 20-VII, p. 341-423.
Reporters S.W. Nelson, Anchorage, AK
Last report date 6/10/2000