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Copper King

Prospect, Inactive

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Commodities and mineralogy

Main commodities Ag; Au; Cu
Other commodities Fe
Ore minerals chalcopyrite; hematite; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale B-5
Latitude 62.3312
Longitude -149.1831
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Copper King prospect is at an elevation of about 3,600 feet on the south valley wall of Iron Creek. It is about 1.2 miles south-southeast of the junction of the East Fork and Iron Creek and 4 miles east of Rainbow Lake, in the NE1/4 sec. 24, T. 26 N., R. 1 E., Seward Meridian. The location is accurate to within 1/4 mile. This is locality 81 of Csejtey and Miller(1978).

Geologic setting

Geologic description

The prospect is in greenstone cut by a shear zone that strikes NE, dips 60 E, and varies from 6 to 20 feet wide (Capps, 1919 [B 692]). Replacement bands within the shear zone consist of massive chalcopyrite, specular hematite intergrown with quartz, and pyrite. Other replacement mineralization varies considerably and contains minor values of gold and silver. A number of trenches and open cuts have been excavated (Capps, 1919 [B 692]).
Geologic map unit (-149.185324537015, 62.3307022510114)
Mineral deposit model Basaltic Cu (Cox and Singer, 1986; model 23)
Mineral deposit model number 23
Alteration of deposit Silicification.

Production and reserves

Workings or exploration A number of trenches and open cuts have been excavated (Capps, 1919 [B 692]).
Indication of production None

Additional comments

MAS/MILS number 20760007.

References

MRDS Number A012189

References

Capps, S.R., 1919, Mineral resources of the upper Chulitna region: U.S. Geological Survey Bulletin 692-D, p. 207-232.
Capps, S.R., 1924, Geology and mineral resources of the region traversed by the Alaska Railroad: U.S. Geological Survey Bulletin 755-C, p. 73-150.
Cobb, E.H., 1972, Metallic mineral resources map of the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-370, 1 sheet, scale 1:250,000.
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.
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.
Singer, D.A., Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and discussion of the metalliferous and selected non-metalliferous mineral resources of the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-558-Q, 33 p., 1 sheet, scale 1:250,000.
Reporters R.K. Rogers (U. S. Geological Survey contractor)
Last report date 10/1/2002