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 ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Apex Prospect, Chichagof District, Sitka Borough, Alaska, USA

This page is currently not sponsored. Click here to sponsor this page.
 
 
Location: The Apex prospect is at an elevation of about 600 feet on the west side of Silver Bay opposite Bear Cove. The prospect is 0.1 mile east of the center of sec. 14, T. 56 S., R. 64 E. It is location P-120 of Bittenbender and others (1999) and MAS no. 0021140162 (U.S. Bureau of Land Management, 2002). The location is accurate within 0.2 mile.
Geology: The rocks in the vicinity of the Apex prospect are part of the Jurassic and Cretaceous, Sitka Graywacke that consists mainly of graywacke and argillite (Loney and others, 1975). The location of the Apex prospect is shown on a map by Becker (1898) but it is not described in the text. The prospect was examined by Bittenbender and others (1999) who found abundant quartz float in a creek and a quartz breccia vein along a fault. The only working was an 8-foot adit along the fault. The vein strikes N30W, dips 75SW, is up to 1.7 feet thick, and contains arsenopyrite and trace chalcopyrite. A sample across the vein contained 270 parts per million (ppm) copper, 44 ppm arsenic, and 0.2 ppm silver. A select sample of the quartz float contained 920 ppm copper and 1.0 ppm silver. The highest gold values in any of the samples was 40 parts per billion.
Workings: The only working is an old 8-foot adit.
Age: Jurassic or younger based on the age of the host rock.
Production: Probably none.

Commodities (Major) - Ag, Au, Cu
Development Status: None
Deposit Model: Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).

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.

References

Becker, G.F., 1898, Reconnaissance of some gold fields of southern Alaska, with some notes on general geology: U.S. Geological Survey 18th annual report, Part 3, p. 7-86. 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. Knopf, Adolph, 1912, The Sitka mining district, Alaska: U.S. Geological Survey Bulletin 504, 32 p. Loney, R.A., Brew, D.A., Muffler, L.J.P., and Pomeroy, J.S., 1975, Reconnaissance geology of Chichagof, Baranof, and Kruzof Islands, southeastern Alaska: U.S. Geological Survey Professional Paper 792, 105 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]

 
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 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: February 24, 2020 13:05:19 Page generated: January 20, 2015 12:20:46
Go to top of page