|Quadrangle map, 1:250,000-scale||MH|
|Quadrangle map, 1:63,360-scale||A-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is about 2 miles east of the terminus of the Chistochina Glacier at an elevation of about 5,000 feet. It is in the NE1/4SW1/4 section 5, T. 20 S., R. 15 E., Fairbanks Meridian. It corresponds to locality 14 on figure 1 of Rose (1967), locality 5 on figure 6 of Cobb (1979 [OFR 78-238]), and locality 130 in table 2 of Nokleberg and others (1991). The location is probably accurate within 0.2 mile.|
Geologic descriptionArgillite of the Slana Spur Formation is pyritized adjacent to a granodiorite intrusion of probable Mesozoic age (Rose, 1967). The pyritic zone is about 750 by 1,500 feet in extent. A sample of intensely iron stained argillite with a trace of chalcopyrite contained 0.04 ounce of gold per ton and a trace of silver (Rose, 1967). A sample collected during a U.S. Geological Survey investigation contained 1.2 ppm of gold, a trace of silver, and 100 ppm tungsten (Nokleberg and others, 1991).
|Geologic map unit||(-144.920328038478, 63.2082030102946)|
|Mineral deposit model||Polymetallic vein(s) (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Age of mineralization||Probably related to a nearby Mesozoic intrusion.|
|Alteration of deposit||Pyritization of argillite adjacent to a Mesozoic granodiorite.|
|Workings or exploration||Geologic mapping and limited surface sampling.|
|Indication of production||None|
Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Mount Hayes quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-238, 140 p.
Nokleberg, W.J., Lange, I.M., Roback, R.C., Yeend, Warren, and Silva, S.R., 1991, Map showing locations of metalliferous lode and placer mineral occurrences, mineral deposits, prospects, and mines, Mount Hayes quadrangle, eastern Alaska Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1996-C, 42 p., 1 sheet, scale 1:250,000.
|Reporters||W.T. Ellis (Alaska Earth Sciences), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (USGS)|
|Last report date||6/28/2003|