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

Chãos, Alcobertas, Rio Maior, Santarém, Portugali
Regional Level Types
ChãosVillage
AlcobertasCivil Parish
Rio MaiorMunicipality
SantarémDistrict
PortugalCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
02791340017272325166994.jpg
Karst environment

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
05086450017272325169852.jpg
Dinosaur footprint

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
07570920017272325168682.jpg
Calcite

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
02791340017272325166994.jpg
Karst environment

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
05086450017272325169852.jpg
Dinosaur footprint

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
07570920017272325168682.jpg
Calcite

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
02791340017272325166994.jpg
Karst environment

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
05086450017272325169852.jpg
Dinosaur footprint

Chãos, Alcobertas, Rio Maior, Santarém, Portugal
Latitude & Longitude (WGS84):
39° 25' 16'' North , 8° 55' 17'' West
Latitude & Longitude (decimal):
39.42134,-8.92142
GRN:
N27W05
Type:
Village
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Mindat Locality ID:
251983
Long-form identifier:
mindat:1:2:251983:1
GUID (UUID V4):
0
Name(s) in local language(s):
Chãos, Alcobertas, Rio Maior, Distrito de Santarém, Portugal


Chãos is a small village belonging to the parish of Alcobertas, located on the southern slope of the Serra dos Candeeiros, on a small plateau just a few meters from the summit of the Serra. Surrounding it are several limestone quarries.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Unclassified
ⓘ'Limonite'-

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
OOxygen
Oⓘ CalciteCaCO3
Oⓘ DolomiteCaMg(CO3)2
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2

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.
Quick NavTopMineral ListOther Regions
 
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 07:23:25 Page updated: August 28, 2025 18:38:00
Go to top of page