Mine detail: Braided Creeks

Previously called 'ManhattanCathedral Creek'

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Location

Lat / long: 56.52623, -158.57553

Resource(M)

Primary: Lead, Copper, Gold, Silver, Zinc
Ore: Arsenopyrite, Chalcopyrite, Galena, Gold, Pyrargyrite, Pyrite, Pyrrhotite, Sphalerite, Tetrahedrite
Gangue: Dolomite, Quartz

Production

Operation type: Unknown
Development status: Prospect

Geology

Host rock:Naknek Formation;Naknek Formation;Naknek Formation;;Chignik Formation
Host type:Dacite
Associated rock:Hoodoo Formation;Tolstoi Formation;Meshik Formation
Associated type:Dacite
Alteration processes:The sedimentary rocks peripheral to the stock exhibit pervasive sericitization in some areas and epidote, chlorite, clay alteration in others. Chloritization in the stock is common and localized areas of quartz-sericite alteration have been reported.

References

MRDSA012443
DEP10001666
Reference{Deposit:: Brown, D.L., Crabtree, E.H., and Smith, F.L., 1965, Mineralogic study of a complex sulfide deposit, vein number 1, project Manhatten, Alaska: Prepared for Pan American Petroleum Corporation by The Colorado School of Mines Foundation Inc., 55 p. (Report held by Alaska Earth Science, Anchorage, Alaska.)}{Deposit:: Cobb, E.H., 1972, Metallic mineral resource map of the Chignik quadrangle, Alaska: U.S. Geological Survey Map MF-374, 1 map sheet, scale 1:250,000.}{Deposit:: U.S. Bureau of Mines, 1973, Alaska 1:250,000-scale quadrangle map overlays showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, 95 overlays (updated in 1986, 1987).}{Deposit:: Fields, E.D., 1977, 1976 Annual report: Alaska search, Chignik area-Bristol Bay region: Bear Creek Mining Company, 44 p., 22 map sheets. (Report held by the Aleut Corporation, Anchorage, Alaska.)}{Deposit:: Anderson, G.D., Fitch, G.M., Lappie, D.W., Lindberg, P.A., and Fankhauser, R.E., 1979, Exploration and evaluation of Bristol Bay Native Corporation Lands, Vol. II, Book 1: prepared for Houston Oil and Minerals Company by Resource Associates of Alaska, 78 p. (Report held by Alaska Earth Science, Anchorage, Alaska.)}{Deposit:: Cobb, E.H., 1980, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and west-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.}{Deposit:: Cox, D.P., Detra, D.E., and Detterman, R.L., 1981, Mineral resource maps of the Chignik and Sutwik Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF- 1053-K, 2 map sheets, scale 1:250,000.}{Deposit:: Detterman, R.L., Miller, T.P., Yount, M.E., and Wilson, F.H.,1981, Geologic map the Chignik and Sutwik Island quadrangles Alaska: U.S. Geologic Survey Miscellaneous Investigations Series Map I- 1229, 1 map sheet, scale 1:250,000.}{Deposit:: Wilson, F.H., and Cox, D.P., 1983, Geochronology, geochemistry, and tectonic environment of porphyry mineralization in the central Alaska Peninsula: U.S. Geological Survey Open-File Report 83-783, 24 p.}{Deposit:: 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.}{Deposit:: Alaska Earth Science, 1997, Mineral and oil and gas potential of the Bristol Bay region, southwestern Alaska: prepared for the Bristol Bay Native Corporation, 11 p. (Report held by Alaska Earth Science, Anchorage, Alaska.)}{Deposit:: Young, L.E., St. George, P., and Bouley, B., 1997, Porphyry copper deposits in relation to the magmatic history and palinspastic restoration of Alaska, in Goldfarb, R.J., and Miller, L.D., (eds.), Mineral deposits of Alaska: Economic Geology Monograph 9, p. 306-333.}
ReporterS.H. Pilcher