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Montana Basin; upper Montana Creek Mine, Juneau District, Juneau Borough, Alaska, USA

Latitude: 58°27'11"N
Longitude: 134°37'40"W
Location: This placer mine is at an elevation of approximately 2,200 feet in the headwaters of Montana Creek, 1 mile east of the divide between Windfall Creek and Montana Creek. It is in the NE1/4 section 27, T. 39 S., R. 65 E. of the Copper River Meridian. The location is accurate within 1/4 mile.
Geology: The upper Montana Creek placer deposit was discovered in 1882, shortly after discoveries in lower Montana Creek (JU110)(Redman and others, 1989). There is some production of gold reported but the amount is not documented. Placer tailings, water ditches, and remains of sluice boxes and an arrastre are visible. The mine area is underlain by black phyllite, greenschist, and greenstone. Quartz stringers containing arsenopyrite, pyrite and chalcopyrite occur in bedrock underlying the stream gravels (Redman and others, 1989).
Workings: The upper Montana Creek placer deposit was discovered in 1882 shortly after discoveries in lower Montana Creek. Placer tailings, water ditches, and remains of sluice boxes and an arrastre are still visible.
Age: Quaternary.
Production: There is some reported production of gold, but the amount is not documented.

Commodities (Major) - Au
Development Status: Undetermined.
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a)

Mineral List


1 entry listed. 1 valid mineral.

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Gehrels, G.E., McClelland, W.C., Samson, S.D., and Patchett, P.J., 1991, U-Pb geochronology of detrital zircons from a continental margin assemblage in the northern Coast Mountains, southeastern Alaska: Canadian Journal of Earth Sciences, v. 28, no. 8, p.1285-1300. Goldfarb, R.J., Miller, L.D., Leach, D.L., and Snee, L.W, 1997, Gold deposits in metamorphic rocks in Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 151-190. Miller, L.D., Goldfarb, R.J., Gehrels, G,E., and Snee, L.W., 1994, Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska: Geology, v. 22, p. 203-206 Redman, E.C., Maas, K.M., Kurtak, J.M., and Miller, L.D., 1989, Bureau of Mines Mineral Investigations in the Juneau Mining District, Alaska, 1984-1988, Volume 2--Detailed mine, prospect, and mineral occurrence descriptions, Section D, Juneau Gold Belt Subarea: U.S. Bureau of Mines Special Publication, 424 p.

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