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Riba de Alva Mine, EscalhΓ£o, Figueira de Castelo Rodrigo, Guarda, Portugali
Regional Level Types
Riba de Alva MineMine
EscalhΓ£oCivil Parish
Figueira de Castelo RodrigoMunicipality
GuardaDistrict
PortugalCountry

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Latitude & Longitude (WGS84):
41° 1' 52'' North , 6° 53' 7'' West
Latitude & Longitude (decimal):
41.03137,-6.88545
GeoHash:
G#: ez717md1j
GRN:
N28W04
Locality type:
Mine
KΓΆppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
La Fregeneda457 (2012)5.0km
Hinojosa de Duero779 (2012)9.0km
Freixo de Espada Γ  Cinta3,780 (2018)9.3km
Saucelle384 (2012)11.2km
Sobradillo323 (2012)14.7km
Name(s) in local language(s):
Mina de Riba de Alva, Barca de Alva-EscalhΓ£o, Figueira de Castelo Rodrigo, Distrito da Guarda, Portugal


Distal scheelite skarns hosted by Cambrian metasediments.
These skarns were formed, after intrusion of the Hercynian Granitic Complex, by selective infiltrative metasomatic alteration of argillaceous dolomitic limestone.

Three main levels of strata-bound, boudin-shaped, 0.5- to 4-m-thick bodies, having a total resource of 380,000 tons (t) with an average grade of 0.51 percent WO3.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


13 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Albite
Formula: Na(AlSi3O8)
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Anorthite
Formula: Ca(Al2Si2O8)
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Armenite
Formula: BaCa2Al6Si9O30 · 2H2O
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Calcite
Formula: CaCO3
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'Clinopyroxene Subgroup'
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Clinozoisite
Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Diopside
Formula: CaMgSi2O6
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Fluorite
Formula: CaF2
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'Hornblende'
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'K Feldspar'
Formula: KAlSi3O8
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'Pyroxene Group'
Formula: ADSi2O6
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Quartz
Formula: SiO2
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ 'Scapolite'
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.
β“˜ Scheelite
Formula: Ca(WO4)
Reference: Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Albite9.FA.35Na(AlSi3O8)
β“˜var. Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
β“˜Anorthite9.FA.35Ca(Al2Si2O8)
β“˜var. Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
β“˜var. Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
β“˜Armenite9.CM.05BaCa2Al6Si9O30 Β· 2H2O
β“˜Axinite-(Fe)9.BD.20Ca2Fe2+Al2BSi4O15OH
β“˜Clinozoisite9.BG.05a(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
β“˜Diopside9.DA.15CaMgSi2O6
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
β“˜'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)
β“˜'Clinopyroxene Subgroup'-
β“˜'Hornblende'-
β“˜'K Feldspar'-KAlSi3O8
β“˜'var. Adularia'-KAlSi3O8
β“˜'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
β“˜'Pyroxene Group'-ADSi2O6
β“˜'Scapolite'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Hβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hβ“˜ ArmeniteBaCa2Al6Si9O30 · 2H2O
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
BBoron
Bβ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Oβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oβ“˜ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Oβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Oβ“˜ ScheeliteCa(WO4)
Oβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oβ“˜ AnorthiteCa(Al2Si2O8)
Oβ“˜ ArmeniteBaCa2Al6Si9O30 · 2H2O
Oβ“˜ K Feldspar var. AdulariaKAlSi3O8
Oβ“˜ Pyroxene GroupADSi2O6
Oβ“˜ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Oβ“˜ DiopsideCaMgSi2O6
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Oβ“˜ CalciteCaCO3
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ QuartzSiO2
Oβ“˜ K FeldsparKAlSi3O8
FFluorine
Fβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fβ“˜ FluoriteCaF2
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Naβ“˜ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Naβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Naβ“˜ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Naβ“˜ AlbiteNa(AlSi3O8)
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgβ“˜ DiopsideCaMgSi2O6
AlAluminium
Alβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Alβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alβ“˜ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Alβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Alβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alβ“˜ AnorthiteCa(Al2Si2O8)
Alβ“˜ ArmeniteBaCa2Al6Si9O30 · 2H2O
Alβ“˜ K Feldspar var. AdulariaKAlSi3O8
Alβ“˜ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ K FeldsparKAlSi3O8
SiSilicon
Siβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Siβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siβ“˜ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Siβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Siβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siβ“˜ AnorthiteCa(Al2Si2O8)
Siβ“˜ ArmeniteBaCa2Al6Si9O30 · 2H2O
Siβ“˜ K Feldspar var. AdulariaKAlSi3O8
Siβ“˜ Pyroxene GroupADSi2O6
Siβ“˜ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Siβ“˜ DiopsideCaMgSi2O6
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ QuartzSiO2
Siβ“˜ K FeldsparKAlSi3O8
PPhosphorus
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Kβ“˜ K Feldspar var. AdulariaKAlSi3O8
Kβ“˜ K FeldsparKAlSi3O8
CaCalcium
Caβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Caβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caβ“˜ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Caβ“˜ ScheeliteCa(WO4)
Caβ“˜ AnorthiteCa(Al2Si2O8)
Caβ“˜ ArmeniteBaCa2Al6Si9O30 · 2H2O
Caβ“˜ FluoriteCaF2
Caβ“˜ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Caβ“˜ DiopsideCaMgSi2O6
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Caβ“˜ CalciteCaCO3
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
BaBarium
Baβ“˜ ArmeniteBaCa2Al6Si9O30 · 2H2O
WTungsten
Wβ“˜ ScheeliteCa(WO4)

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Gaspar, L.M. and Inverno, C.M. (2000): Mineralogy and metasomatic evolution of distal strata-bound scheelite skarns in the Riba de Alva mine, northeastern Portugal. Econ. Geol. 95, 1259-1275. [http://repositorio.lneg.pt/bitstream/10400.9/2615/1/RibAlva.pdf ]

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Iberian PeninsulaPeninsula

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