Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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

Electrum from
Banjas Mines, Melres, Gondomar, Porto, Portugal


Locality type:Mine
Classification
Species:Native Gold var: Electrum
Formula:(Au,Ag)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Electrum data
Locality Data:Click here to view Banjas Mines, Melres, Gondomar, Porto, Portugal
Data Identifiers
Mindat Occurrence Record ID:918452
Long-form Identifier:1:3:918452:7
GUID (UUID V4):0
Nearest other occurrences of Electrum
0.0km (0.0 miles) ⓘBanjas Mines, Sobreira, Paredes, Porto, Portugal
6.9km (4.3 miles) ⓘCastromil Mines, Castromil, Sobreira, Paredes, Porto, Portugal
10.5km (6.5 miles) ⓘSerra de Pias Mines, Valongo, Valongo, Porto, Portugal
77.0km (47.8 miles) ⓘJales Mines (Jales Mining Field), Tresminas, Vila Pouca de Aguiar, Vila Real, Portugal
77.0km (47.8 miles) ⓘJales Mines (Jales Mining Field), Vreia de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
79.7km (49.5 miles) ⓘJales Mines (Jales Mining Field), Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
81.6km (50.7 miles) ⓘGralheira Mine, Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
83.2km (51.7 miles) ⓘSanto António Mine, U.F. Penedono e Granja, Penedono, Viseu, Portugal
83.2km (51.7 miles) ⓘVieiros Mine, Penela da Beira, Penedono, Viseu, Portugal
83.4km (51.8 miles) ⓘMãos Mine, Estorãos, Ponte de Lima, Viana do Castelo, Portugal
References
LNEG - Laboratório Nacional de Energia e Geologia, Siorminp ID 37Au
 
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 6, 2026 10:17:19
Go to top of page