Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Biotite from
Black Mountain (Swartberg mine), Aggeneys, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa


Locality type:Mountain
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 Black Mountain (Swartberg mine), Aggeneys, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
Data Identifiers
Mindat Occurrence Record ID:1709366
Long-form Identifier:1:3:1709366:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
10.9km (6.8 miles) ⓘAggeneys, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
27.6km (17.2 miles) ⓘHotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
57.8km (35.9 miles) ⓘTantalite Valley, Karasburg East, ǁKaras Region, Namibia
78.9km (49.1 miles) ⓘNorabees I pegmatite, Norrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
80.2km (49.8 miles) ⓘNorrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
88.6km (55.1 miles) ⓘPutsberg, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
88.9km (55.3 miles) ⓘKoperberg Mine, Carolusberg, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
89.3km (55.5 miles) ⓘNarrap Mine, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
89.9km (55.9 miles) ⓘKliphoog Mine, Concordia, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
91.5km (56.8 miles) ⓘKokerboomrand pegmatite, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
References
Rudnick, Tarryn-Kim; Rozendaal, Abraham (2013) Genesis of the stratiform BH-t Swartberg Cu-Pb-Zn-Ag deposit, Northern Cape, South Africa.
Kim Cawood, Tarryn; Rozendaal, Abraham (2020) A Multistage Genetic Model for the Metamorphosed Mesoproterozoic Swartberg Base Metal Deposit, Aggeneys-Gamsberg Ore District, South Africa. Economic Geology, 115 (5). 1021-1054 doi:10.5382/econgeo.4725
 
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: October 19, 2026 13:38:18
Go to top of page