Unnamed (north of Dorenoi Bay) (ARDF #PM036) Ag, Au

Unnamed (north of Dorenoi Bay)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Ag; Au
Other commodities	Cu; Mo; Zn
Ore minerals	pyrite
Gangue minerals	calcite

Geographic location

Quadrangle map, 1:250,000-scale	PM
Quadrangle map, 1:63,360-scale	C-2
Latitude	55.7
Longitude	-160.4
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This approximately located occurrence is on the Alaska Peninsula, about 4.2 miles north of upper Dorenoi Bay (Christie, 1974, color anomaly 75; MacKevett and Holloway, 1977, locality 24; Wilson and others, 1988, locality 24). The map site is at an elevation of 1,100 feet, in the SE1/4 of sec. 35, T. 51 S., R. 72 W., of the Seward Meridian. The location is accurate to within 3 miles.

Geologic setting

Geologic description The area of this site is marked by a 1- by 2-mile color anomaly (Christie, 1974, number 75) in the late Eocene to early Oligocene Stepovak Formation (Wilson and others, 1995). The bedded rocks are intruded by several plutons. Christie described the occurrence as sparse calcite veins and vein breccias containing a trace of pyrite. He collected six silt samples that contained as much as 0.01 ppm gold, 1.8 ppm silver, 70 ppm copper, 102 ppm zinc, and 4 ppm molybdenum.
Geologic map unit	(-160.402024442157, 55.6991806344572)
Age of mineralization	Eocene or younger.

Production and reserves

Workings or exploration	Christie briefly examined and silt-sampled the site in 1974.
Indication of production	None
Additional comments The site is located on land selected by the Aleut Corporation.

References

MRDS Number	10308112
References Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps.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.) 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. 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 sheet, scale 1:250,000. 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., 1 plate, scale 1:250,000.
Reporters	S.H. Pilcher
Last report date	1/8/2001