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

Biotite from
Humboldt lopolith, Churchill County, Nevada, USA


Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Humboldt lopolith, Churchill County, Nevada, USA
Data Identifiers
Mindat Occurrence Record ID:654246
Long-form Identifier:1:3:654246:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
35.1km (21.8 miles) Weaver Canyon Mine, Rochester Mining District, Pershing County, Nevada, USA
67.3km (41.8 miles) Hard-to-Find Mine, Copper Valley Mining District, Churchill County, Nevada, USA
68.1km (42.3 miles) Tehama Mine, Star Mining District, Humboldt Range, Pershing County, Nevada, USA
84.5km (52.5 miles) Fish Creek prospect, Fish Creek Mountains, McCoy Mining District, Lander County, Nevada, USA
87.1km (54.1 miles) Unnamed prospect (MRDS10222034), Juniper Range Mining District, Pershing County, Nevada, USA
88.8km (55.2 miles) Nevada Massachusetts Company, Pershing County, Nevada, USA
90.9km (56.5 miles) Buffalo Valley Molybdenum Prospect, Lander County, Nevada, USA
95.8km (59.5 miles) Phoenix Mine, Battle Mountain Mining District, Lander County, Nevada, USA
95.9km (59.6 miles) Buffalo Valley mine, Buffalo Valley Mining District, Lander County, Nevada, USA
95.9km (59.6 miles) Buffalo Valley Gold Mine, Buffalo Valley mine, Buffalo Valley Mining District, Lander County, Nevada, USA
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 4, 2026 09:11:20
Go to top of page