|Quadrangle map, 1:250,000-scale||MH|
|Quadrangle map, 1:63,360-scale||B-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of 6,200 feet approximately 1 mile east of the toe of McCallum Glacier. It is in the SW1/4NW1/4 section 12, T. 19 S., R. 11 E., Fairbanks Meridian. The occurrence is described by Hanson (1963, locality 13), and it corresponds to locality 27 in Cobb (1979 [OFR 79-238]) and locality S118 in table 2 of Nokelberg and others (1991).|
Geologic descriptionThis occurrence consists of chalcopyrite and galena in quartz veins as much as 6 inches thick that strike N60E and dip 40S (Hanson, 1963). The veins cut altered meta-andesite intruded by quartz diorite. A grab sample of iron-stained meta-andesite contained 3 parts per million silver (Nokleberg and others, 1991). The host rocks are part of the Slana Spur Formation of Pennsylvanian age (Nokleberg and others, 1991). This occurrence is one of the four prominent areas of pyrite and chalcopyrite disseminated in dacitic tuff noted by Hanson (1963, p. 67, figure 5).
|Geologic map unit||(-145.568244137515, 63.2840885170283)|
|Mineral deposit model||Polymetallic veins (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Age of mineralization||Pennsylvanian or younger.|
|Alteration of deposit||The meta-andesite is highly altered adjacent to the quartz diorite intrusion (Hanson, 1963).|
|Workings or exploration||A grab sample of iron-stained meta-andesite contained 3 parts per million silver (Nokleberg and others, 1991).|
|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.
Hanson, L.G., 1963, Bedrock geology of the Rainbow Mountain area, Alaska Range, Alaska: Alaska Division of Mines and Minerals Geologic Report 2, 82 p., 2 plates.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
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 Science), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (USGS)|
|Last report date||8/9/2002|