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Seixos Alvos Mine, U.F Couto de Cima e Couto de Baixo, Viseu, Viseu, Portugali
Regional Level Types
Seixos Alvos MineOpen-Cast Mine (Abandoned)
U.F Couto de Cima e Couto de BaixoCivil Parish
ViseuMunicipality
ViseuDistrict
PortugalCountry

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Latitude & Longitude (WGS84):
40° 39' 33'' North , 8° 1' 34'' West
Latitude & Longitude (decimal):
40.65932,-8.02632
GeoHash:
G#: ez4r33g3t
GRN:
N28W05
Type:
Open-Cast Mine (Abandoned) - last checked 2025
Deposit first discovered:
1976
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Parada de Gonta754 (2018)8.8km
Abraveses9,319 (2012)9.2km
Viseu26,364 (2018)9.8km
Campo4,551 (2018)11.0km
São Pedro do Sul4,080 (2014)11.4km
Mindat Locality ID:
457601
Long-form identifier:
mindat:1:2:457601:6
GUID (UUID V4):
0


Mining concession number 3491 "Seixos Alvos nº2", for quartz.
Open cuts in pegmatite.
As of 2025, abandoned, with the tailings/dumps used for motocross and bikecross.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals.

Detailed Mineral List:

ⓘ Beryl
Formula: Be3Al2(Si6O18)
References:
Luis Martins collectionIdentified by Luís Martins: Visual Identification
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
References:
Luis Martins collectionIdentified by Luís Martins: Visual Identification
ⓘ 'Feldspar Group'
References:
Luis Martins collectionIdentified by Luís Martins: Visual Identification
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
References:
Luis Martins collectionIdentified by Luís Martins: Visual Identification
ⓘ Quartz
Formula: SiO2
References:
Luis Martins collectionIdentified by Luís Martins: Visual Identification

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Feldspar Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
OOxygen
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Iberian PeninsulaPeninsula

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