WebSafe 3.7mindat.org
|
|
🏠
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 Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
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 ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Sepiolite from
Bonanza prospect, Whitehall Mining District (Cardwell Mining District), Jefferson County, Montana, USA


Locality type:Prospect
Classification
Species:Sepiolite
Formula:Mg4(Si6O15)(OH)2 · 6H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sepiolite data
Locality Data:Click here to view Bonanza prospect, Whitehall Mining District (Cardwell Mining District), Jefferson County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:1622228
Long-form Identifier:1:3:1622228:7
GUID (UUID V4):0
Nearest other occurrences of Sepiolite
0.9km (0.5 miles) ⓘNorth pit, Golden Sunlight Mine, Whitehall Mining District (Cardwell Mining District), Jefferson County, Montana, USA
40.0km (24.8 miles) ⓘBerkeley Pit, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA
References
Gnanou, Hamadou (2018) Mineralogy and sulfur isotope geochemistry of the Apex and Bonanza prospects at the Golden Sunlight mine, Montana. Montana Tech of The University of Montana. 78pp.
 
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.
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: February 24, 2026 03:45:31
Go to top of page