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Unnamed Occurrence (ARDF - TA019; south of Taylor Mountains), Aniak District, Dillingham Borough, Alaska, USA

Location: This occurrence is reported to be about 1 mile south of the upper Taylor Creek airstrip (T.K. Bundtzen, personal commun., 1992). For this record, the map site is at an elevation of 1,400 feet in the NE1/4 of section 23, T 9 N, R 46 W, of the Seward Meridian. It is very approximately located, perhaps within a mile.
Geology: T. K. Bundzten (personal commun., 1992) reports that disseminated arsenopyrite, cinnabar, pyrite, and minor gold are in hypabyssal rhyolite about 1 mile south of the Taylor Creek airstrip. Sparse sulfides are also in quartz-tourmaline veinlets that cut the rhyolite. Cady and others (1955, p. 71, plate 1) noted east-west-trending rhyolite dikes or sills on the ridges just west of lower Forks Creek, about about 2.5 miles east-northeast of this occurrence. The felsic hypabyssal rocks intrude mid-Cretaceous clastic sedimentary rocks of the Kuskokwim Group.
Workings: Some surface examination and sampling has occurred but the nature of any additional work is not known.
Age: Late Cretaceous or Early Tertiary, the age of felsic plutons in southwest Alaska that intrude the mid-Cretaceous clastic sedimentary rocks of the Kuskokwim Group.
Alteration: Quartz-tourmaline veining is present.

Commodities (Major) - Au; (Minor) - Ag, Hg
Development Status: None
Deposit Model: Sulfide-bearing veins in or near felsic hypabyssal intrusive rocks



References:
Cady, W.M., Wallace, R.E., Hoare, J.M., and Webber, E.J., 1955, The central Kuskokwim region, Alaska: U.S. Geological Survey Professional Paper 268, 132 p.





Map Reference: 60°51'36"N , 157°22'48"W

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Mineral List:
Arsenopyrite
Cinnabar
Gold
Pyrite
Quartz
'Tourmaline'


6 entries listed. 5 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Alaska, USA 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. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 26th Nov 2009 08:40:41