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Kizhuyak Lode, North

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Ag; Au; Cu
Ore minerals chalcopyrite; pyrrhotite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale KD
Quadrangle map, 1:63,360-scale D-2
Latitude 57.881
Longitude -152.634
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located on the east coast of Larsen Island in sec. 35, T. 26 S., R. 21 W., of the Seward Meridian ( Berg and Cobb, figure 1967, figure 15, locality 7; Rose and Richter, 1967, figure 1, locality 6; Cobb, 1972, MF 460, locality 15; McGee, 1972, locality 2; MacKevett and Holloway 1977, locality 14. Site location is accurate to within a few hundred feet.

Geologic setting

Geologic description

This occurrence represents the northern end of the Kizhuyak lode. Here the granodiorite on the beach is cut by numerous quartz veins striking N. 15 W. and containing local lenses of pyrrhotite. A sample collected by Rose and Richter assayed 0.10 ounce per ton gold, 1.10 ounce per ton silver, 0.15 percent copper, and trace arsenic. A few hundred feet to the south an area of graywacke inclusions is cut by numerous quartz veins containing minor pyrrhotite and traces of chalcopyrite.
Geologic map unit (-152.636193191307, 57.8802638722995)
Mineral deposit model Chugach-type low-sulfide gold-quartz veins (Bliss, 1992; model 36a.1).
Mineral deposit model number 36a.1
Age of mineralization Tertiary

Production and reserves

Workings or exploration One sample assayed 0.10 ounce per ton gold and 1.10 ounce per ton silver.
Indication of production None

Additional comments

Site is on land conveyed to the Koniag Corporation.

References

MRDS Number A106319

References

Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Capps, S.R., 1937, Kodiak and adjacent islands, in Smith, P.S. and others, Mineral resources of Alaska, report on progress of investiagtions in 1935: U.S. Geological Survey Bulletin 880-C, p. 111-184, 1 plate, scale 1:250,000.
Cobb, E.H., 1972, Metallic mineral resources map of the Kodiak quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-460, 1 map sheet, scale 1:250,000.
Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Afognak, Karluk, Kodiak, and Trinity Islands quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-860, 49 p.
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.
McGee, D.L., 1972, Kodiak Island and vicinity, Alaska: Geology and mineral resources: Alaska Division of Geological & Geophysical Surveys Alaska Open-File Report 31, 7 p., 1 sheet, scale 1:250,000.
Rose, A.W., and Richter, D.H., 1967, Geology and stream sediment geochemistry of Anton Larsen Bay and vicinity, Kodiak Island, Alaska: Alaska Division of Mines and Minerals Geologic Report 31, 10 p., 1 sheet, scale 1:63,360.
Reporters S.H. Pilcher (Anchorage)
Last report date 10/5/1998