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

Serrinha waste pile - Pejão mining area - Douro Coalfield, Arouca, Aveiro, Portugali
Regional Level Types
Serrinha waste pile - Pejão mining area - Douro CoalfieldCoal Field
AroucaMunicipality
AveiroDistrict
PortugalCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
40° North , 8° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~12km
GRN:
N28W05
Type:
Coal Field
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Mindat Locality ID:
264179
Long-form identifier:
mindat:1:2:264179:2
GUID (UUID V4):
0
Name(s) in local language(s):
Serrinha, Couto mineiro do Pejão, Campo carbonífero do Douro, Arouca, Distrito de Aveiro, Portugal


Sulphates formed due to weathering of coal waste.
Located about 18 km NW of Arouca.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘHexahydrite7.CB.25MgSO4 · 6H2O
ⓘEpsomite7.CB.40MgSO4 · 7H2O
ⓘPickeringite7.CB.85MgAl2(SO4)4 · 22H2O
ⓘBlödite7.CC.50Na2Mg(SO4)2 · 4H2O

List of minerals for each chemical element

HHydrogen
Hⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Hⓘ EpsomiteMgSO4 · 7H2O
Hⓘ HexahydriteMgSO4 · 6H2O
Hⓘ PickeringiteMgAl2(SO4)4 · 22H2O
OOxygen
Oⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Oⓘ EpsomiteMgSO4 · 7H2O
Oⓘ HexahydriteMgSO4 · 6H2O
Oⓘ PickeringiteMgAl2(SO4)4 · 22H2O
NaSodium
Naⓘ BlöditeNa2Mg(SO4)2 · 4H2O
MgMagnesium
Mgⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Mgⓘ EpsomiteMgSO4 · 7H2O
Mgⓘ HexahydriteMgSO4 · 6H2O
Mgⓘ PickeringiteMgAl2(SO4)4 · 22H2O
AlAluminium
Alⓘ PickeringiteMgAl2(SO4)4 · 22H2O
SSulfur
Sⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Sⓘ EpsomiteMgSO4 · 7H2O
Sⓘ HexahydriteMgSO4 · 6H2O
Sⓘ PickeringiteMgAl2(SO4)4 · 22H2O

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Iberian PeninsulaPeninsula

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Joana Ribeiro, Silvio R. Taffarel, Carlos H. Sampaio, Deolinda Flores, Luis F.O. Silva (2013): Mineral speciation and fate of some hazardous contaminants in coal waste pile from anthracite mining in Portugal. International Journal of Coal Geology, 109-110, 15-23.
Quick NavTopMineral ListOther RegionsReferences
 
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 08:28:54 Page updated: August 21, 2025 14:29:02
Go to top of page