Vote for your favorite mineral in #MinCup26! - Arsenuranylite vs. Talc
It's a pair of soft and lovely minerals as Stichtite and Talc compete for your votes.
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
Granduc Mine, Stewart, Skeena Mining Division, British Columbia, Canada


Locality type:Mine
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 Granduc Mine, Stewart, Skeena Mining Division, British Columbia, Canada
Data Identifiers
Mindat Occurrence Record ID:1278235
Long-form Identifier:1:3:1278235:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
28.9km (18.0 miles) ⓘKerr Cu-Au deposit, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
31.6km (19.6 miles) ⓘSnowfield Au-Cu deposit, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
32.5km (20.2 miles) ⓘSulphurets deposits, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
35.5km (22.0 miles) ⓘMitchell Cu-Au deposit, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
42.0km (26.1 miles) ⓘA6 Anomaly, Skeena Mining Division, British Columbia, Canada
60.1km (37.3 miles) ⓘInel deposit, Iskut River, Liard Mining Division, British Columbia, Canada
66.5km (41.4 miles) ⓘJohnny Mountain mine (Stonehouse deposit), Iskut River, Liard Mining Division, British Columbia, Canada
68.7km (42.7 miles) ⓘRed Bluff prospect, Iskut River, Liard Mining Division, British Columbia, Canada
69.2km (43.0 miles) ⓘSnip Mine, Iskut River, Liard Mining Division, British Columbia, Canada
70.4km (43.7 miles) ⓘBronson Skarn, Iskut River, Liard Mining Division, British Columbia, Canada
References
(n.d.) Minfile, British Columbia Ministry of Energy, Mines and Petroleum Resources.
 
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 8, 2026 03:32:37
Go to top of page