Miller House Occurrence, Circle District, Yukon-Koyukuk Borough, Alaska, USA

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Location: The location is a road cut along the Steese Highway, near Miller House.
Geology: This site contains massive to disseminated arsenopyrite in four large and four small iron-stained shear zones. Zones over 150 meters long occur in middle Paleozoic or older schist of the Yukon-Tanana terrane. Intense alteration occurs along the zones. Grab samples contain up to 3.9 grams per ton Au (Menzie and others, 1983; Nokleberg and others, 1987).
Workings: Surface samples collected and analyzed.
Alteration: Significant amount of Fe-oxide.

Commodities (Major) - Au
Development Status: None
Deposit Model: Auriferous arsenopyrite along altered shear zones.

References

Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p. Cobb, E.H., 1972, Metallic mineral resources map of the Circle quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-391, 1 sheet, scale 1:250,000. Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p. Foster, H.L., O'Leary, R.M, McDougal, C.M, and Menzie, W.D., 1984, Analyses of rock samples from the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 84-479, 126 p., 1 sheet, scale 1:250,000. Menzie, W.D., Foster, H.L., Tripp, R.B., and Yeend, W.E., 1983, Mineral resource assessment of the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-170-B, 61 p., 1 sheet, 1:250,000. Nokleberg, W.J., Bundtzen, T.K., Berg, H.C., Brew, D.A., Grybeck, D.J., Robinson, M.S., Smith, T.E., and Yeend, W., 1987, Significant metalliferous lode deposits and placer districts of Alaska: U.S. Geological Survey Bulletin 1786, 104 p., 2 plates, scale 1:5,000,000. Tripp R.B., Detra, D. E., and Mishi, J. M., 1982, Mineralized zones in bedrock near Miller Creek, Circle quadrangle, in Coonrad, W.L., ed., The U.S. Geological Survey in Alaska--Accomplishments during 1980: U.S. Geological Survey Circular 844-B, p. 62. Wedow, Helmuth, Jr., Killeen, P. L., and others, 1954, Reconnaissance for radioactive deposits in eastern interior Alaska, 1946: U.S. Geological Survey Circular 331, 36 p.

Mineral List

Arsenopyrite Gold

Limonite Pyrite

Zircon

5 entries listed. 4 valid minerals.