Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Unnamed Prospect (ARDF - ID135; southwest of upper Granite Creek), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA

This page is currently not sponsored. Click here to sponsor this page.
Location: This prospect is at an elevation of about 1,100 feet on a flat terrace east of the head of Granite Creek. It is about 0.7 mile southwest of hill 1235 and near the center of the north boundary of section 7, T. 26 N., R. 41 W., of the Seward Meridian. The location is accurate.
Geology: This prospect consists of a series of shear zones associated with thin quartz-sulfide veinlets in a light-colored granitic rock of alaskite composition and quartz-calcite veins in sandstone (Bundtzen, Miller, and Laird, 1986; Miller and Bundtzen, 1994, and Miller, Bundtzen, and Gray, 2005). The alaskite forms two dikes, each about 30 feet thick, with thin, 0.4- to 1-inch-thick quartz-sulfide veins on fractures and joints. The dikes strike N82-88E and are vertical. Quartz-calcite veins occur in sandstone adjacent to the dike rocks The dikes are part of the same dike swarm that hosts gold-antimony mineralization at the Wyrick lode (ID133). Grab samples of mineralization contained 500 parts per billion (ppb) silver, 48 parts per million (ppm) antimony, 560 ppb mercury, and 40 ppm arsenic. Although gold was not detected in these samples, fine gold was panned from an exploration trench (L.E. Wyrick, oral communication, 1986; Bundtzen, Miller, and Laird, 1986).
Workings: Prospect pits were sunk on the property sometime before 1984. In 1985, L.E. Wyrick cut a 160-feet-long trench,which was sampled by Bundtzen, Miller, and Laird (1986). Battle Mountain Mining Company explored the area in the 1980s (Szumigala, 1993).
Age: Unknown; a nearby intrusion has a 40K/40Ar age of 71.1 Ma (Miller and Bundtzen, 1994).

Commodities (Major) - Au; (Minor) - Ag, As, Hg, Sb
Development Status: None
Deposit Model: Polymetallic veins (Cox and Singer, 1986; model 22c).

Mineral List

3 entries listed. 3 valid minerals.

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.


Bundtzen, T.K., and Miller, M.L., 1997, Precious metals associated with Late Cretaceous-early Tertiary igneous rocks of southwestern Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 242-286. McGimsey, R.G., Miller, M.L., and Arbogast, B.F., 1988, Paper version of analytical results, and sample locality map for rock samples from the Iditarod quadrangle, Alaska: U.S. Geological Survey Open-File Report 88-421-A, 110 p., 1 sheet, scale 1:250,000. Miller, M.L., and Bundtzen, T.K., 1994, Generalized geologic map of the Iditarod quadrangle, Alaska showing potassium-argon, major oxide, trace element, fossil, paleocurrent, and archeological sample localities: U.S. Geological Survey Miscellaneous Field Studies Map MF-2219-A, 48 pages; 1 sheet, scale 1:250,000. Miller, M.L., Bundtzen, T.K., and Gray, J.E., 2005, Mineral resource assessment of the Iditarod quadrangle, west-central Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2219-B, scale 1:250,000, pamphlet.

Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 19, 2019 00:54:07 Page generated: January 25, 2015 15:47:00
Go to top of page