1. Mineral Resources
  2. Online Spatial Data
  3. Alaska Resource Data File (ARDF)

Unnamed (north of Mine Harbor)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu; Zn
Gangue minerals calcite

Geographic location

Quadrangle map, 1:250,000-scale PM
Quadrangle map, 1:63,360-scale D-3
Latitude 55.786
Longitude -160.688
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located on the Alaska Peninsula approximately 1 mile north of Mine Harbor on Herendeen Bay (MacKevett and Holloway, 1977, locality 23; Wilson and others, 1988, locality 23). The map site is at an elevation of 1,450 feet, in the NE1/4 of sec. 10, T. 51 S., R. 74 W., of the Seward Meridian. The location is accurate to within 1,200 feet.

Geologic setting

Geologic description

MacKevett and Holloway (1977) reported altered zones at this occurrence, probably related to Tertiary granitic rocks. No exposures of granite rocks were found in the area during U.S. Geological Survey studies in the mid-1980s (Wilson and others, 1988). Instead, these studies indicated extensive silicification and calcification of siltstone and sandstone of the Cretaceous Staniukovich Formation. A rock sample of olive-green siltstone was reported to be anomalous in copper and zinc (Wilson and others, 1987).
Geologic map unit (-160.690029596434, 55.7851761923228)
Age of mineralization Cretaceous or younger.

Production and reserves

Workings or exploration The U.S. Geological Survey mapped and sampled this occurrence in the mid-1980s. Sample 85AJm 765 was reported to be anomalous in copper and zinc (Wilson and others, 1987).
Indication of production None

References

MRDS Number 10308108

References

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., Harris, E.E., and Bailey, E.A., 1987, Preliminary analytical results and sample locality map for rock samples collected in 1985 and 1986, Port Moller and Stepovak Bay quadrangles, Alaska: U.S. Geological Survey Open-File Report 87-497, 44 p., 1 plate, 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