Glacier Creek Mine, Skagway District, Juneau District, Haines Borough, Alaska, USA
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Geology: According to Hoekzema and others (1986), there was prospecting and placer mining on the lower parts of Glacier Creek from 1899 to 1918. As much as a quarter of million dollars was spent developing a placer mine that was probably based on salted samples. No significant production was reported. Glacier Creek is less steep than most of the creeks in the area. Reconnaissance sampling by the U.S. Bureau of Mines found no significant recoverable gold values. Pan concentrate samples contained up to 70% sulfides, mostly pyrite, 10% magnetite, and minor garnet and zircon.
Workings: Claims were staked on Glacier Creek in 1899 and 1900 but were not developed at that time due to the depth to the pay gravels and the low ore grades (Hoekzema and others, 1986). According to Eakins (1919) the creek was drilled at close intervals for over a mile upstream from the margin of the Klehini River valley and preparations were made to work a 4,200 long section of the lower valley. Dams, flumes, pipelines, giants and hydraulic elevator were installed by midsummer 1915 but operation was prevented by floods that year. There was little production in 1916 due to flooding in late June, 1916 . Hoekzema and others (1986) report that operations continued into 1918 but recovery was poor and the operation closed down after working a quarter mile of stream channel. They also cite a report by Beatty (1937) that indicates that a quarter of million dollars were spent on development that was based on drilling results which later proved to have been salted.
Age: Probably no placer in Quaternary gravels.
Production: Probably little or no production.
Commodities (Major) - Au?
Development Status: Undetermined.
Deposit Model: Probably no placer but if so a placer Au deposit (Cox and Singer, 1986; model 3
Mineral List
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References
Beatty, W.B., 1937, Geology of the placer deposits of Porcupine, Alaska: Seattle, University of Washington, B.Sci. thesis, 97 p. Berg, H.C., 1984, Regional geologic summary, metallogenesis, and mineral resources of southeastern Alaska: U.S. Geological Survey Open-file Report 84-572, 298 p., 1 plate, scale 1:600,000. Cobb, E.H., 1972, Metallic mineral resources map of the Skagway quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-424, 1 sheet, scale 1:250,000. Eakin, H.M., 1919, The Porcupine gold placer district, Alaska: U.S. Geological Survey Bulletin 699, 29 p. Gilbert, W.G., and Redman, E.C., 1989, Lode deposits, prospects, and occurrences of the Porcupine mining area, southeast Alaska: U.S. Bureau of Mines Open-File Report 17-89, 1 sheet, scale 1:39,600. Hoekzema, R.B., Fechner, S.A., and Bundtzen, T.K., 1986, Distribution, analysis, and recovery of placer gold from the Porcupine mining area, southeast Alaska: U.S. Bureau of Mines Open-File Report 89-86, 49 p., 4 sheets. Still, J.C., 1991, Bureau of Mines mineral investigations in the Juneau mining district, Alaska, 1984-1988; Volume 2, Detailed mine, prospect, and mineral occurrence descriptions, Section A, Haines-Klukwan-Porcupine subarea: U.S. Bureau of Mines of Mines Special Publication, 214 p. Still, J.C., Hoekzema, R.B., Bundtzen, T.K., Gilbert, W.G., Wier, K.R., Burns, L.E., and Fechner, S.A., 1991, Economic geology of Haines-Klukwan-Porcupine area, southeastern Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 91-4, 156 p., 5 sheets, scale 1:63,360.
