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Covide quarry, Covide, Terras de Bouro, Braga, Portugali
Regional Level Types
Covide quarryQuarry
Covide- not defined -
Terras de Bouro- not defined -
BragaDistrict
PortugalCountry

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Key
Lock Map
Latitude & Longitude (WGS84):
41° North , 8° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~4km
Locality type:
Name(s) in local language(s):
Pedreira de Covide, Covide, Terras de Bouro, Distrito de Braga, Portugal


Pegmatite - old feldspar quarry.

"Abstract" of the bellow mentioned article: the Covide pegmatite, (Northern Portugal), exhibit a new example of K-feldspar, Albite, quartz layering. The present study leads to propose a magmatic petrogenetit model, with double diffusive processe in temperature gradient allowing the simultaneous growth of millimetric and horizontal »floating layers« of albite. Each cell, unit-phenomenon between two consecutive boundary layers, evolves in closed system with a centripetal, oriented crystallization. The layered organisation is obtaind in the magmatic liquid medium.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Iberian PeninsulaPeninsula

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Contribution à l´étude des litages pegmatitiques: l'exemple de la pegmatite de Covide (Nord-Portugal) Par YVES GOUANVIC et CLAUDE GAGNY
Beryl
Formula: Be3Al2(Si6O18)
Reference: LIGS, Maria Fernandes Domingues Lages de Lima. Universidade do Minho, Braga 2006
'K Feldspar'
Reference: Contribution à l´étude des litages pegmatitiques: l'exemple de la pegmatite de Covide (Nord-Portugal) Par YVES GOUANVIC et CLAUDE GAGNY
Microcline
Formula: K(AlSi3O8)
Reference: LIGS, Maria Fernandes Domingues Lages de Lima. Universidade do Minho, Braga 2006
Orthoclase
Formula: K(AlSi3O8)
Reference: LIGS, Maria Fernandes Domingues Lages de Lima. Universidade do Minho, Braga 2006
Quartz
Formula: SiO2
Reference: Contribution à l´étude des litages pegmatitiques: l'exemple de la pegmatite de Covide (Nord-Portugal) Par YVES GOUANVIC et CLAUDE GAGNY
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: LIGS, Maria Fernandes Domingues Lages de Lima. Universidade do Minho, Braga 2006

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Beryl9.CJ.05Be3Al2(Si6O18)
Microcline9.FA.30K(AlSi3O8)
Orthoclase9.FA.30K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'K Feldspar'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'K Feldspar'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O AlbiteNa(AlSi3O8)
O QuartzSiO2
O MicroclineK(AlSi3O8)
O OrthoclaseK(AlSi3O8)
O BerylBe3Al2(Si6O18)
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
NaSodium
Na AlbiteNa(AlSi3O8)
AlAluminium
Al AlbiteNa(AlSi3O8)
Al MicroclineK(AlSi3O8)
Al OrthoclaseK(AlSi3O8)
Al BerylBe3Al2(Si6O18)
SiSilicon
Si AlbiteNa(AlSi3O8)
Si QuartzSiO2
Si MicroclineK(AlSi3O8)
Si OrthoclaseK(AlSi3O8)
Si BerylBe3Al2(Si6O18)
KPotassium
K MicroclineK(AlSi3O8)
K OrthoclaseK(AlSi3O8)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleozoic
251.902 - 541 Ma



ID: 3157665
Palaeozoic granite

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Granite group

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Paleozoic
251.902 - 541 Ma



ID: 3189819
Paleozoic intrusive rocks

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Contribution à l´étude des litages pegmatitiques: l'exemple de la pegmatite de Covide (Nord-Portugal) Par YVES GOUANVIC et CLAUDE GAGNY, Vandoeuvre (*) - Geologische Rundschau 76/1, 125-135, Stuttgart 1987.
António Moura, Jens Götze, Stuart Kearns - Contribution to the genesis of the Covide layered pegmatite (Portugal); European Current Research On Fluid Inclusions (ECROFI-XXIII), Leeds - UK, 27 - 29 June, 2015.
-
(*) Y GOUANVIC et C GAGNY: Laboratoire de Pétrologie Structurale et Métallogénie, Université de Nancy I, UA 728 du CNRS, Pétrologie des Granitoides, BP 239, 54506 Vandoeuvre-les-Nancy cedex, France

External Links



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