|Quadrangle map, 1:250,000-scale||CO|
|Quadrangle map, 1:63,360-scale||A-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Located along west bank of Porcupine River opposite mouth of Salmon Trout River, near Old Rampart; locality recorded here is from Cobb (1972) and locality 15 of Barker and Clautice (1978, p. 14), which varies slightly from Barker (1978, 1981); located to within 3000 ft (914 m).|
Geologic descriptionNickeliferous alum collected from a seep on the bank of Porcupine River. May indicate high Ni content in nearby gabbro/diorite or Middle Devonian sedimentary rocks. Rock samples of iron stained limestone and shales have anomalous copper (up to 500 ppm), lead (500 ppm), and zinc (2000 ppm), as well as vanadium and nickel (Barker, 1981, p. 50, no. 4; Barker and Clautice, 1978, p. 19, no. 15).
|Geologic map unit||(-141.692677168323, 67.1497399583955)|
|Mineral deposit model||Seep|
|Indication of production||None|
Additional commentsSee MAS/MILS Sequence number 0020330002 (USBM, 1995).
Barker, J.C., 1978, Mineral investigations of certain lands in the eastern Brooks Range: A Summary Report: U.S. Bureau of Mines Open-File Report 63-78, 25 p., 5 sheets, scale 1:1,000,000.
Barker, J.C., 1981, Mineral investigations in the Porcupine River drainage, Alaska: U.S. Bureau of Mines Open-File Report 27-81, 189 p., 2 sheets.
Barker, J.C., and Clautice, K.H., 1978, Mineral reconnaissance of the Porcupine River region--A summary report: U.S. Bureau of Mines Open-File Report 87-78, 20 p.
Cobb, E.H., 1972, Metallic mineral resources map of the Coleen quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-403, 1 sheet, scale 1:250,000.
|Reporters||M.T. Powers; D.F. Huber; J.M. Schmidt; J.H. Dover|
|Last report date||9/12/1996|