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Escádia Grande Mine, Alvares, Góis, Coimbra, Portugali
| Regional Level Types | |
|---|---|
| Escádia Grande Mine | Mine |
| Alvares | Civil Parish |
| Góis | Municipality |
| Coimbra | District |
| Portugal | Country |
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Latitude & Longitude (WGS84):
40° 4' 50'' North , 8° 6' 57'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Góis | 2,171 (2018) | 8.5km |
| Castanheira de Pêra | 3,331 (2014) | 11.5km |
| Vila Nova de Ceira | 929 (2018) | 11.6km |
| Lousã | 11,445 (2011) | 12.0km |
| Pampilhosa da Serra | 1,389 (2014) | 14.5km |
Owned/operated by:
Name(s) in local language(s):
Mina da Escádia Grande, Alvares, Góis, Distrito de Coimbra, Portugal
Inactive Au-Ag mine.
Mining concession no. 1999 registered on 1941.
At this old mine, that was also worked by the Romans, there was gold production during the 1940s. Mineralisation occurs associated with quartz vein structures running NW-SE, dipping SW, probably related with the Oporto-Tomar thrust system, and consists of polymetallic sulphides (pyrite, arsenopyrite, sphalerite, galena and chalcopyrite) in which the gold is finely disseminated. The wall rock belongs to the Schist-Greywacke Complex and is frequently altered by silicification and carbonisation phenomena, with which the mineralisation is associated (*).
Descrição: filão de quartzo (D1/D3), orientado N 40º a 55º W e 60º a 65º SW e com possança até 0,8 m.
Mineralizações principais: ouro.
Rochas encaixantes: xistos, grauvaques.
Geologia local: unidades turbidíticas do Proterozóico superior - Câmbrico, dentro da zona de cisalhamento Porto - Tomar (D1/D3).
Geologia regional: Complexo Xisto-grauváquico, ante-Ordovícico.
In LNEG database.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
16 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 DiagramDetailed Mineral List:
| ⓘ Acanthite Formula: Ag2S |
| ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) |
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Boulangerite Formula: Pb5Sb4S11 |
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Gold Formula: Au References: |
| ⓘ 'Mica Group' |
| ⓘ Proustite ? Formula: Ag3AsS3 Description: To be confirmed by analyzes References: |
| ⓘ Pyrargyrite Formula: Ag3SbS3 Description: SEM-EDS analyzed by Pedro Alves, February 2017 References: |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Scheelite Formula: Ca(WO4) |
| ⓘ Siderite Formula: FeCO3 References: |
| ⓘ Silver Formula: Ag |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z |
| ⓘ 'Wolframite Group' |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| ⓘ | Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Acanthite | 2.BA.35 | Ag2S |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| ⓘ | Proustite ? | 2.GA.05 | Ag3AsS3 |
| ⓘ | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
| ⓘ | Boulangerite | 2.HC.15 | Pb5Sb4S11 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| ⓘ | 'Wolframite Group' | 4.DB.30 va | |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
| Unclassified | |||
| ⓘ | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
| ⓘ | 'Mica Group' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
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Escádia Grande Mine, Alvares, Góis, Coimbra, Portugal