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Unnamed (west of Beaver Creek)

Prospect, Active?

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Commodities and mineralogy

Main commodities Ag; Pb; Zn
Other commodities Bi; Sb
Ore minerals galena; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SP
Quadrangle map, 1:63,360-scale A-5
Latitude 67.109
Longitude -155.402
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site is at an elevation of about 3500 feet on a ridge about 4 miles west of Beaver Creek. It is in the NE1/4 of sec. 29, T. 20 N., R. 16 E., of the Kateel River Meridian. The location is accurate to within 1000 ft. The site corresponds to location 67 of Garland and others (1975, DGGS OFR 67).

Geologic setting

Geologic description

This deposit is associated with skarns in medium-grade metamorphic rocks, irregular quartz veins or segregations containing galena and sphalerite. The deposit crops out in an area of at least 10 x 40 feet. The deposit may be related to a small granite pluton nearby. Samples from surface trenching contained 2800 ppm Ag and 5000 ppm Zn (Garland and others, 1975, DGGS OFR 67). Other analysis of massive galena indicates up to 1000 ppm Ag and 700 ppm Sb (Grybeck and Nelson, 1981). The deposit was staked in about 1976; work aparently was limited to surface trenching.
Geologic map unit (-155.404724528159, 67.1084773853342)
Mineral deposit model Skarn? (Cox and Singer, 1986; model 18?).
Mineral deposit model number 18?

Production and reserves

Indication of production None

References

MRDS Number A011913

References

Garland, R.E., Eakins, G.R., Trible, T.C., and McClintock, W.W., 1975, Geochemical analysis of rock and stream-sediment samples from Survey Pass A-4, A-5, A-6, B-4, B-5, and B-6 quadrangles: Alaska Division of Geological and Geophysical Surveys Open-File Report AOF-67, 4 p., 4 sheets, scale 1:63,360.
Grybeck, D.J., and Nelson, S.W., 1981, Mineral deposit map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-F, 1 sheet, scale 1:250,000.
Reporters S.W. Nelson (Anchorage, Alaska)
Last report date 9/22/1999