|Quadrangle map, 1:250,000-scale||IL|
|Quadrangle map, 1:63,360-scale||C-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is about halfway between Meadow Lake and Pile Bay in the headwaters of a northeast tributary to Upper Copper Lake. It probably is at an elevation of about 1,000 feet in the SW1/4 NW1/4 sec. 16, T. 6 S., R. 28 W., Seward Meridian. The accuracy of the occurrence is uncertain (see Geologic description). The site is location 24 of Detterman and Cobb (1972).|
Geologic descriptionA Cretaceous or Tertiary granodiorite batholith or large stock intrudes the Triassic Cottonwood Bay Greenstone near this occurrence (Detterman and Reed, 1980). Up to about 5 percent magnetite is disseminated in the greenstone within about 100 to 200 feet of its contact with the granodiorite. The deposit is probably large but low grade (Berg and Cobb, 1967). Location 24 of Detterman and Cobb (1972) appears to be in granodiorite mapped by Detterman and Reed (1980); instead it probably is in Cottonwood Bay Greenstone, somewhat to the east.
|Geologic map unit||(-154.06085381467, 59.6552309208142)|
|Age of mineralization||Probably Triassic or younger.|
|Workings or exploration||Berg and Cobb (1967) reported that the occurrence had been staked, but there is no report of any workings.|
|Indication of production||None|
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Detterman, R.L., and Cobb, E.H., 1972, Metallic mineral resources map of the Iliamna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-364, 1 sheet, scale 1:250,000.
|Reporters||C.C. Hawley, Hawley Resource Group, Anchorage, Alaska|
|Last report date||6/6/2003|