Vote for your favorite mineral in #MinCup26! - Monazite-(Ce) vs. Andalusite
It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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
Bermillo de Alba, Fonfría, Zamora, Castile and Leon, Spain


Locality type:Village
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 Bermillo de Alba, Fonfría, Zamora, Castile and Leon, Spain
Data Identifiers
Mindat Occurrence Record ID:610935
Long-form Identifier:1:3:610935:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
5.2km (3.2 miles) ⓘCerezal de Aliste, Muelas del Pan, Zamora, Castile and Leon, Spain
9.3km (5.8 miles) ⓘVillaflor, Muelas del Pan, Zamora, Castile and Leon, Spain
27.9km (17.4 miles) ⓘSanta Ana, Alcañices, Zamora, Castile and Leon, Spain
32.6km (20.3 miles) ⓘSan Mamed, Rábano de Aliste, Zamora, Castile and Leon, Spain
33.8km (21.0 miles) ⓘVillarino trás la Sierra, Trabazos, Zamora, Castile and Leon, Spain
37.2km (23.1 miles) ⓘLatedo, Trabazos, Zamora, Castile and Leon, Spain
69.2km (43.0 miles) ⓘGold deposits (incl. Saturno Mine; Los Espinos Valley), Barruecopardo, Salamanca, Castile and Leon, Spain
74.4km (46.2 miles) ⓘMurçós Mines, Murçós, Macedo de Cavaleiros, Bragança, Portugal
77.7km (48.3 miles) ⓘMacedo de Cavaleiros Volcanic area, Bornes, Macedo de Cavaleiros, Bragança, Portugal
79.8km (49.6 miles) ⓘBarruecopardo Mine, Barruecopardo, Salamanca, Castile and Leon, Spain
References
Fernández, A., Moro, M. C. (1998) Origin and depositional environment of Ordovician stratiform iron mineralization from Zamora (NW Iberian Peninsula) Mineralium Deposita, 33 (6) 606-619 doi:10.1007/s001260050176
 
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 7, 2026 02:37:08
Go to top of page