|Quadrangle map, 1:250,000-scale||TK|
|Quadrangle map, 1:63,360-scale||C-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of about 2,800 feet, 1 mile north of the Talkeetna River, near the center of the NE1/4 sec. 21, T. 28 N., R. 4 E., Seward Meridian. The location is accurate to within 1/4 mile. This is locality 45 of Csejtey and Miller (1978).|
Geologic descriptionThis occurrence consists of a small brecciated shear zone with pyrite, limonite, and malachite, in mafic metavolcanic rock (Csejtey and Miller, 1978). U.S. Geological Survey samples contain up to 10 parts per million silver, 70 parts per million nickel, 30 parts per million cobalt, and more than 20,000 parts per million copper (Miller and others, 1978).
|Geologic map unit||(-148.717324463127, 62.5038174945563)|
|Mineral deposit model||Basaltic Cu? (Cox and Singer, 1986; model 23?)|
|Mineral deposit model number||23?|
|Alteration of deposit||Oxidation of iron and copper minerals.|
|Workings or exploration||Only rock samples collected by the U.S. Geological Survey (Miller and others, 1978).|
|Indication of production||None|
Cobb, E.H., and Csejtey, Bela, Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-716, 63 p.
Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 22 p., 1 sheet, scale 1:250,000.
Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000.
Miller, R.J., Cooley, E.F., O'Leary, R.M., Garmezy, Larry, Csejtey, Bela, Jr., Smith, T.E., and Cleveland, M.N., 1978, Analysis of geochemical samples from the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-1052, 279 p., 3 sheets, scale 1:250,000.
|Reporters||R.K. Rogers (U. S. Geological Survey contractor)|
|Last report date||10/1/2002|