Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Muscovite-biotite granite from
Regoufe Mines, Covelo de Paivó, Arouca, Aveiro, Portugal


Locality type:Mine
Classification
Type:Muscovite-biotite granite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite-biotite granite data
Locality Data:Click here to view Regoufe Mines, Covelo de Paivó, Arouca, Aveiro, Portugal
Data Identifiers
Mindat Occurrence Record ID:1571840
Long-form Identifier:1:3:1571840:4
GUID (UUID V4):0
Nearest other occurrences of Muscovite-biotite granite
20.6km (12.8 miles) ⓘBejanca Mine (Carvalhal do Estanho), Queirã, Vouzela, Viseu, Portugal
59.1km (36.7 miles) ⓘLamas de Olo pluton, Vila Marim, Vila Real, Vila Real, Portugal
87.3km (54.2 miles) ⓘBorralha Mines, Salto, Montalegre, Vila Real, Portugal
References
Sant’Ovaia, Helena, Cláudia Cruz, Alexandra Guedes, Helena Ribeiro, Patrícia Santos, Sónia Pereira, Jorge Espinha Marques, Maria dos Anjos Ribeiro, Catarina Mansilha, Helena Cristina Brites Martins, Bruno Valentim, Joana Torres, Ilda Abreu, Fernando Noronha, and Deolinda Flores. (2023) "Contamination Fingerprints in an Inactive W (Sn) Mine: The Regoufe Mine Study Case (Northern Portugal)" Minerals 13, no. 4: 497. https://doi.org/10.3390/min13040497
 
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