Mine detail: Orange Hill

Previously called ''

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Location

Lat / long: 62.20549, -142.84454

Resource(M)

Primary: Copper, Molybdenum, Gold, Silver
Ore: Chalcopyrite, Molybdenite, Pyrite
Gangue: Calcite, Gypsum, Quartz

Production

Operation type: Unknown
Development status: Prospect

Geology

Alteration processes:Central altered zone 400 m by 2000 m contain abundant biotite, quartz veinlets, minor k-feldspar, chlorite, and sericite cut by late stage anhydrite veins. Outer altered zones contain chlorite, minor sericite and anhydrite.

References

MRDSA011395
DEP10308923
Reference{Deposit:: Moffit, F.H., 1943, Geology of the Nutzotin Mountains, Alaska, with a section on the igneous rocks, by R. C. Wayland, and Gold deposits near Nabesna, by R. C. Wayland, 1943: U.S. Geological Survey Bulletin 933-B, p. 103-199.}{Deposit:: Van Alstine, R.E., and Black, R.F., 1944, Mineral deposits at Orange, Hill, Alaska: U.S. Geological Survey Open-File Report 76, 16 p., 1 sheet.}{Deposit:: Moffit, F.H., 1954, Geology of the eastern part of the Alaska Range and adjacent area: U.S. Geological Survey Bulletin 989-D, p. 63-218.}{Deposit:: Richter, D.H., 1973, Reconnaissance geological map of the Nabesna A-1 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map 1-789, scale 1:63,360.}{Deposit:: Richter, D.H., Singer, D.A., and Cox, D.P., 1975, Mineral resources map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-655-K, scale 1:250,000.}{Deposit:: Hollister, V.F., Anzalone, S.A., and Richter, D.H., 1975, Porphyry copper belts of southern Alaska and contiguous Yukon Territory: CIM (Canadian Mining and Metallurgical) Bulletin, v. 68, no. 756, p. 104-112.}
ReporterLeonard, K.R. (Elliott, R.L.); Nokleberg, W.J.; Richter, D.H.