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

Virginia Prospect, Hyder District, Prince of Wales-Outer Ketchikan Borough, Alaska, USA

This page is currently not sponsored. Click here to sponsor this page.
Deposit originally staked in 1919.
Location: The Virginia prospect is at the southwest corner of Section 24 at an elevation of about 600 feet, between an abandoned aerial tramway and the old road that follows the Salmon River to the International Boundary (Elliott and Koch, 1981, p. 16, loc. 61). The location is accurate to within about 0.1 mile.
Geology: The country rocks in the area of the Virginia prospect are pelitic metasedimentary and subordinate andesitic metavolcanic (greenstone) strata of the Jurassic or older Mesozoic Hazelton Group; the Triassic Texas Creek Granodiorite, which underlies and locally intrudes the Hazelton; the Eocene Boundary Granodiorite, which intrudes the Hazelton and Texas Creek rocks; and still-younger Tertiary lamprophyre dikes that cut all the other rocks (Smith, 1973, 1977; Koch, 1996). The deposit (Buddington, 1925, p. 74, 84; 1929, p. 43, 88-89) is in a mineralized shear zone in porphyritic greenstone cut by granodiorite and lamprophyre(?) dikes. An interval 12-16 feet wide in the 50-foot wide shear zone contains an oreshoot of nearly solid sulfides, accompanied by quartz gangue. The sulfides are pyrrhotite, sphalerite, pyrite, and a little galena and tetrahedrite. The greenstone also contains disseminated sulfide minerals, stringers of quartz, calcite, and sulfide minerals. Near contacts of granodiorite porphyry dikes, the greenstone also contains the contact-metamorphic minerals garnet and epidote. A little chalcopyrite occurs along with the other sulfides in some of the epidote-rich greenstone. Selected samples of the ore reportedly assayed as high as 4.5 oz Au per ton.
Workings: Prospect was explored in 1920's by 600-700 feet of crosscuts and tunnels. Selected sampes of the ore reportedly assayed as high as 4.5 oz Au per ton; average Au content was about 0.25 oz per ton.
Alteration: Local contact metamorphism of greenstone; greenstone is impregnated with sulfide minerals

Commodities (Major) - Au, Cu, Pb, Zn
Development Status: None
Deposit Model: Polymetallic veins; Skarn Zn-Pb

Mineral List

8 entries listed. 8 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.


Buddington, A.F., 1925, Mineral investigations in southeastern Alaska: U.S. Geological Survey Bulletin 773-B, p. 71-139. Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p. Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360. Koch, R.D., 1996 [In press), Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report, 1 sheet, scale 1:250,000. Smith, J.G., 1973, A Tertiary lamprophyre dike province in southeastern Alaska: Canadian Journal of Earth Sciences, v. 10, p. 408-420. Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p., 1 plate.

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. 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: June 19, 2019 05:56:59 Page generated: January 20, 2015 04:47:42
Go to top of page