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

Ferronigerite-2N1S from
Seixoso Mine, Seixoso Mining Field, Borba de Godim, Vila Cova da Lixa e Borba de Godim, Felgueiras, Porto, Portugal


Locality type:Mine
Classification
Species:Ferronigerite-2N1S
Formula:(Al,Fe,Zn)2(Al,Sn)6O11(OH)
Comments:The reference for ferronigerite-2N1S is from 1965 and it's unclear which local mine was sampled. The author's analysis is of ferronigerite, however (although not done with modern in-situ methods). Nonetheless, newer EPMA data show zinconigerite-2N1S is present from the Seixoso mine. So even if both species are present, they would not appear to be distinguishable from hand sample properties alone. So ID should ideally be "ferronigerite-2N1S/zinconigerite-2N1S series" in lieu of analytical data confirming one or the other end-member. EPMA analyses on purported ferronigerite-2N1S from this specific mine would be valuable to confirm the presence of the species at this locality. (FKM)
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Ferronigerite-2N1S data
Locality Data:Click here to view Seixoso Mine, Seixoso Mining Field, Borba de Godim, Vila Cova da Lixa e Borba de Godim, Felgueiras, Porto, Portugal
Data Identifiers
Mindat Occurrence Record ID:1267883
Long-form Identifier:1:3:1267883:1
GUID (UUID V4):0
Nearest other occurrences of Ferronigerite-2N1S
0.3km (0.2 miles) ⓘTapada da Bemposta No.1 Mine, Seixoso Mining Field, Borba de Godim, Vila Cova da Lixa e Borba de Godim, Felgueiras, Porto, Portugal
9.8km (6.1 miles) ⓘVieiros Mines, Rebordelo, Amarante, Porto, Portugal
39.5km (24.5 miles) ⓘLousas aplite-pegmatite, Dornelas, Boticas, Vila Real, Portugal
66.0km (41.0 miles) ⓘCabanas Mine, Arcozelo, Ponte de Lima, Viana do Castelo, Portugal
References
Van Tassel, R. (1965). Nigerite from Lixa, near Felgueiras, Douro Litoral Province, Portugal. Miner. Mag., 34(268): 482–486.
 
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 07:49:33
Go to top of page