Vote for your favorite mineral in #MinCup26! - Cuprite vs. Orpiment
It's a fiery match of vibrant red Cuprite and just as saturated orange Orpiment battle for your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
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 ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced 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 MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Unnamed Prospect (ARDF - CR109), Twelvemile Arm, Kasaan Bay, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
Regional Level Types
Unnamed Prospect (ARDF - CR109)- not defined -
Twelvemile Arm- not defined -
Kasaan BayBay
Prince of Wales IslandIsland
Ketchikan Mining DistrictMining District
Prince of Wales-Hyder Census AreaCensus Area
AlaskaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
55° 20' 38'' North , 132° 45' 43'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Hydaburg391 (2017)15.7km
Hollis112 (2011)24.9km
Craig1,248 (2017)28.5km
Klawock765 (2017)31.3km
Thorne Bay483 (2017)41.1km
Mindat Locality ID:
202115
Long-form identifier:
mindat:1:2:202115:0
GUID (UUID V4):
0


Location: This prospect is about 1.1 mile west-southwest of the head of Twelvemile Arm and about 0.2 mile east of the northwest corner of section 26, T. 75 S., R. 83 E. This is locality 2 of Herreid and Rose (1966), who suggest that it may be the Dolly Varden prospect. However, that prospect is probably about 3 miles to the east (CR110).
Geology: As described by Herreid and Rose (1966), this prospect consists of an 18-foot adit and an 8-foot winze driven on a calcite vein. There are apparently no ore minerals in the vein. The rocks in the vicinity are interbedded marble, greenstone, and greenschist of the Wales Group of Cambrian and older age (Eberlein and others, 1983; Brew, 1996).
Workings: An 18-foot adit and an 8-foot winze.
Age: This apparently unmineralized quartz vein is in marble, greenstone, and greenschist of Cambrian or older age.
Deposit Model: Questionable deposit.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3

List of minerals for each chemical element

CCarbon
C CalciteCaCO3
OOxygen
O CalciteCaCO3
CaCalcium
Ca CalciteCaCO3

Other Databases

Link to USGS - Alaska:CR109

Other Regions, Features and Areas containing this locality


This page 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

 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 5, 2026 08:50:51 Page updated: July 31, 2025 02:26:25
Go to top of page