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Herbert River

Prospect, Inactive

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Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale JU
Quadrangle map, 1:63,360-scale C-3
Latitude 58.5311
Longitude -134.703
Nearby scientific data Find additional scientific data near this location
Location and accuracy This placer prospect is at an elevation of approximately 100 feet on Herbert River near the terminus of the Herbert Glacier. It is in the SE1/4SE1/4 section 32, T. 38 S., R. 65 E. of the Copper River Meridian. The location is accurate.

Geologic setting

Geologic description

The Herbert Glacier gold placer prospect consists of glacial sand deposited near the terminus of the glacier. The sand was mined in 1932 and 1933 and processed with a centrifugal concentrator, but recovery was poor and the operation failed. Native gold-bearing quartz veins outcrop upstream from this prospect along the southern margin of Herbert Glacier (JU097) (Redman and others, 1989).
Geologic map unit (-134.704788965999, 58.530774349999)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Glacial sand from the Herbert River was mined in 1932 and 1933 and processed with a centrifugal concentrator, but recovery was poor and the operation failed.
Indication of production Undetermined

References

References

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., 1991, Section D: Juneau Gold Belt subarea, in U.S. Bureau of Mines, Mineral investigations in the Juneau Mining District, Alaska, 1984-1988: Volume 2 - Detailed mine, prospect, and mineral occurrence descriptions: U.S. Bureau of Mines Special Publication VOL. 2D, 424 p., 19 sheets.
Reporters J.C. Barnett and L.D. Miller (Juneau, Alaska )
Last report date 12/15/2001