Unnamed Occurrence (ARDF - SI152; northeast shore of Deep Bay), Chichagof District, Sitka Borough, Alaska, USA
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Geology: Johnson and Karl (1985) map the rocks in the vicinity of this occurrence as part of a Tertiary(?) granodiorite stock. The stock contains roof pendants and inclusions of Mesozoic or Paleozoic amphibolite, gneiss, schist, and marble; the rocks are cut by high-angle, mainly northwest-striking faults. Bittenbender and others (1999), citing Kimball (1982), report that a stream-sediment sample at this site contained 12 parts per million gold, but that no gold was found in other samples.
Workings: Only stream sampling.
Commodities (Major) - Au
Development Status: None
Deposit Model: Placer gold? (Cox and Singer, 1986; model 39a).
1 entry listed. 1 valid mineral.
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Bittenbender, P., Still, J.C., Maas, K., and McDonald, M., Jr., 1999, Mineral resources of the Chichagof and Baranof Islands area, southeast Alaska: Bureau of Land Management, BLM-Alaska Technical Report 19, 222 p. Johnson, B.R, and Karl, S.M., 1985, Geologic map of western Chichagof and Yakobi Islands, southeastern Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map 1-1506, 1 sheet, scale 1:125,000. Kimball, A.L., 1982, Mineral land assessment of Yakobi Island and adjacent parts of Chichagof Island, southeastern Alaska: U. S. Bureau of Mines Mineral Land Assessment report, MLA 97-82, 199 p. U.S. Bureau of Land Management, 2002, Alaska mineral locations database report (Sitka quadrangle), July 2, 2002, 205 p. [http://imcg.wr.usgs.gov/dem.html]