Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
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

Roscoelite from
Unnamed Roscoelite occurrence [1], Mount Thompson (Thompson Peak), El Dorado County, California, USA


00541900017656477548550.jpg
Roscoelite

Unnamed Roscoelite occurrence [1], Mount Thompson, El Dorado County, California, USA
00541900017656477548550.jpg
Roscoelite

Unnamed Roscoelite occurrence [1], Mount Thompson, El Dorado County, California, USA
06877840017654076799493.jpg
Roscoelite

Unnamed Roscoelite occurrence [1], Mount Thompson, El Dorado County, California, USA
Locality type:Occurrence
Classification
Species:Roscoelite
Formula:KV23+(AlSi3O10)(OH)2
Comments:Occurs in surface soil and also in pockets.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Roscoelite data
Locality Data:Click here to view Unnamed Roscoelite occurrence [1], Mount Thompson (Thompson Peak), El Dorado County, California, USA
Data Identifiers
Mindat Occurrence Record ID:641407
Long-form Identifier:1:3:641407:8
GUID (UUID V4):0
References
Kimble, George W. (1907), Pockets in the upper portion of gold veins: Mining and Scientific Press: 94: 343-344
Wright, F.E. (1914), The optical properties of roscoelite: American Journal of Science, 4th. series: 38: 305
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 324.
 
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 4, 2026 14:48:17
Go to top of page