Unnamed Occurrence (ARDF - MF021; west of Tarr Inlet), Juneau District, Skagway-Hoonah-Angoon Borough, Alaska, USA
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Location: The occurence is at an elevation of 700 feet about 4.5 miles from the mouth of Tarr Inlet in the NE 1/4 NE 1/4 section 23, T. 33 S., R. 50 E., of the Copper River Meridian. The occurrence is about 0.75 miles south of the Tarr Inlet prospect of Kimball and others (1978; fig. C41), which is on the Skagway A-6 quadrangle. The occurrence is located within 0.2 mile.
Geology: The area is underlain predominantly by foliated granitic rock of Cretaceous age (Brew and others, 1978). A sample of a 2-foot by 6-foot sulfide pod in granitic host contained 0.10 ounce per ton gold (3.5 ppm)--Kimball and others, 1978, location 4, fig. C41, table C36).
Workings: Surface exposure only; a grab sample of a 2-foot by 6-foot sulfide rich pod assayed 3.5 ppm in gold; no other element was anomalous (Kimball and others, 1978).
Age: Tertiary.
Commodities (Major) - Au
Mineral List
1 entry listed. 1 valid mineral.
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References
Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p., 7 sheets. Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.