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Unnamed Occurrence (ARDF - TK013; near Devils Canyon), Valdez Creek District, Matanuska-Susitna Borough, Alaska, USA

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MAS/MIL number 20760107.
Location: This occurrence is at an elevation of about 1,200 feet in Devils Canyon of the Susitna River. It is on the north wall of the canyon near the tip of a prominent bend in the river in the NE1/4 sec. 32, T. 32 N., R. 1 E., Seward Meridian. The location is accurate to within 1/2 mile.
Geology: This rocks in the area are dark gray to black argillite, lithic graywacke, and polymictic pebble conglomerate, with a few thin beds of chert and limestone (Kurtak and others, 1992). An iron-stained rhyolite dike cuts silicified and pyrite-bearing argillite. Selected samples contain up to 2 parts per million silver, 209 parts per million copper, and 205 parts per million zinc (Balen, 1990).
Workings: Only rock sampling by U.S. Bureau of Mines (Balen, 1990).
Alteration: Iron-oxides and silicification.

Commodities (Major) - Ag; (Minor) - Cu, Zn
Development Status: None
Deposit Model: Polymetallic vein? (Cox and Singer, 1986; model 22c?)

Mineral List



1 entry listed. 1 valid mineral.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Balen, M.D., 1990, Geochemical sampling results from the Bureau of Mines investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 plates, scale 1:250,000. Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000. Kurtak, J.M., Southworth, D.D., Balen, M.D., and Clautice, K.H., 1992, Mineral investigations in the Valdez Creek mining district, south-central Alaska: U.S. Bureau of Mines Open-File Report 1-92, 659 p., 2 plates, scale 1:250,000.

 
Mineral and/or Locality  
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