Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Almeida, Guarda, Portugal


mindat Locality ID: 53842
mindat URL: http://www.mindat.org/loc-53842.html

Tectonic Settings:

Total number of sublocalities beneath "Almeida, Guarda, Portugal": 19
Total number of bottom-level sublocalities: 12

Number of Child Localities: 10
Child Localities:
Almeida
Amoreira
Azinhal
Freineda
Freixo
Junça
Malhada Sorda
Malpartida
Nave De Haver
Vilar Formoso

Latitude: 40°37'46"N
Longitude: 6°54'53"W
Decimal Degree (lat, lon): 40.629444444444,-6.9147222222222
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al As B Be C Ca Cu F Fe H K Mn Mo Na O P S Si Sn Ti U W 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmorphousApatiteAragoniteArsenopyriteAutuniteCancrinite-sodaliteClayCorundumFeldsparFluorite
GarnetMeta-autuniteMicaMolybdeniteNonePyriteQuartzRutileScheeliteSodalite
TopazTourmaline

23 IMA Minerals at location:
Albite  (*)Aragonite  (*)Arsenopyrite  (*)Autunite  (*)Cassiterite  (*)
Fluorapatite  (*)Fluorite  (*)Helvine  (*)Ilmenite  (*)Meta-autunite  (*)
Microcline  (*)Molybdenite  (*)Muscovite  (*)Opal  (*)Orthoclase  (*)
Pyrite  (*)Quartz  (*)Scheelite  (*)Schorl  (*)Spessartine  (*)
Topaz  (*)Torbernite  (*)Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)1992048803
Aragonite  (*)AragoniteCa(CO3)1992043250
Arsenopyrite  (*)ArsenopyriteFeAsS299204,992109052
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O499198,99200,99202,992041272
Cassiterite  (*)RutileSnO2599196,99205,99207,99208,992105171
Fluorapatite  (*)ApatiteCa5(PO4)3F1992042740
Fluorite  (*)FluoriteCaF21992049617
Helvine  (*)Sodalite Cancrinite-sodaliteBe3Mn2+4(SiO4)3S199204237
Ilmenite  (*)CorundumFe2+Ti4+O31992085433
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O199204388
Microcline  (*)FeldsparK(AlSi3O8)1992044924
Molybdenite  (*)MolybdeniteMoS21992045800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)219920417380
Opal  (*)AmorphousSiO2·nH2O1992042994
Orthoclase  (*)FeldsparK(AlSi3O8)1992042349
Pyrite  (*)PyriteFeS2299204,9921039462
Quartz  (*)QuartzSiO2699196,99198,99204,99205,99208,9921061156
Scheelite  (*)ScheeliteCa(WO4)1992104894
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)1992042705
Spessartine  (*)GarnetMn2+3Al2(SiO4)31992041214
Topaz  (*)TopazAl2SiO4F21992041476
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O399198,99200,992021059
Uraninite  (*)FluoriteUO21991982718


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

All age data...

Other copyright data...