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Unnamed Occurrence (ARDF - CR067), Tolstoi Mountain, Kasaan Peninsula, Prince of Wales Island, Ketchikan District, Prince of Wales-Outer Ketchikan Borough, Alaska, USA

Latitude: 55°39'2"N
Longitude: 132°22'48"W

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Location: This occurrence is a few hundred feet southeast of the outlet of a small lake about 0.4 mile north of Tolstoi Mountain. It is in the SE1/4 section 4, T. 72 S., R. 85 E. The geology and workings in the area are shown on plate 16 of Warner and others (1961).
Geology: This occurrence was first described by Warner and others (1961). The deposit consists of a vein about 4 inches thick that is exposed for about 8 feet; it strikes N50W and dips 60SW. It consists of stringers of pyrite and arsenopyrite in brecciated quartz, and may contain gold. The rocks in the vicinity are part of a large Silurian or Ordovician granodiorite stock.
Age: The vein cuts Silurian or Ordovician granodiorite.

Commodities (Major) - Au?; (Minor) - As
Development Status: None
Deposit Model: Gold?-quartz vein.

Mineral List

Arsenopyrite

Pyrite

Quartz

3 entries listed. 3 valid minerals.

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References

Cobb, E. H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-869, 262 p. Warner, L.A., Goddard, E.N., and others, 1961, Iron and copper deposits of Kasaan Peninsula, Prince of Wales Island, southeastern Alaska: U.S. Geological Survey Bulletin 1090, 136 p.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 25th May 2012 05:25:15