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

Gilbertite from
Balleswidden Mine, St Just, Cornwall, England, UK


Locality type:Mine
Classification
Species:Muscovite var: Gilbertite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gilbertite data
Locality Data:Click here to view Balleswidden Mine, St Just, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:466296
Long-form Identifier:1:3:466296:9
GUID (UUID V4):0
Nearest other occurrences of Gilbertite
15.1km (9.4 miles) ⓘSouth Wheal Providence (South Wheal Speed), Carbis Bay, St Ives, Cornwall, England, UK
22.1km (13.7 miles) ⓘMegiliggar Rocks (Tremearne pegmatite), Breage, Cornwall, England, UK
23.8km (14.8 miles) ⓘGreat Wheal Fortune, Breage, Cornwall, England, UK
31.4km (19.5 miles) ⓘFatwork Mine, East Wheal Lovell (incl. Tregonebris Mine), Trewennack, Wendron, Cornwall, England, UK
31.6km (19.6 miles) ⓘSouth Wendron Mine (South Wheal Lovell; Lovell Consols), Trewennack, Wendron, Cornwall, England, UK
31.7km (19.7 miles) ⓘBalmynheer Mine, Porkellis, Wendron, Cornwall, England, UK
35.0km (21.8 miles) ⓘHalvosso Quarry (Halvasso Quarry; Kessel Downs Quarry), Mabe, Cornwall, England, UK
39.4km (24.5 miles) ⓘLower Kergilliack Quarry, Budock, Cornwall, England, UK
60.6km (37.7 miles) ⓘTrethosa China Clay Pit, Treviscoe, St Stephen-in-Brannel, Cornwall, England, UK
62.2km (38.7 miles) ⓘStenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, Cornwall, England, UK
References
Rowe, T.P., and Le Neve Foster, C. (1879): Transactions of the Royal Geological Society of Cornwall 10, 10-17
Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.pp.100-102
 
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 10:34:12
Go to top of page