|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 at an elevation of 6,200 feet is near the crest of Rainbow Ridge 1.5 miles south-southeast of the top of Rainbow Ridge. It is in the NE1/4NW1/4 section 10, T. 19 S., R. 11 E., Fairbanks Meridian. The occurrence is described by Hanson (1963, locality 7). It corresponds to locality 22 in Cobb (1979 [OFR 79-238]) and locality S112 in table 2 of Nokelberg and others (1991).|
Geologic descriptionThis occurrence consists of chalcopyrite, galena, and pyrite in vertical quartz veins as much as 8 feet wide that strike north-south and cut a Permian dacite intrusive (Hanson, 1963; Nokleberg and others, 1991). The dacite intrudes the Tetelna Volcanics of Permian age. A sample of mineralized vein contained 4,000 parts per million (ppm) copper, 6,000 ppm lead, and a trace each of silver and gold (Nokleberg and others, 1991).
|Geologic map unit||(-145.620246986537, 63.2873878093325)|
|Mineral deposit model||Porphyry Cu (Cox and Singer, 1986; model 17).|
|Mineral deposit model number||17|
|Age of mineralization||Permian or younger.|
|Workings or exploration||A sample of mineralized vein contained 4,000 parts per million (ppm) copper, 6,000 ppm lead, and a trace each of silver and gold (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|