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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Shale from
Porteirinhos Mine, Almodôvar e Graça dos Padrões, Almodôvar, Beja, Portugal


Locality type:Mine
Classification
Type:Shale
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Shale data
Locality Data:Click here to view Porteirinhos Mine, Almodôvar e Graça dos Padrões, Almodôvar, Beja, Portugal
Data Identifiers
Mindat Occurrence Record ID:1676431
Long-form Identifier:1:3:1676431:2
GUID (UUID V4):0
Nearest other occurrences of Shale
3.3km (2.0 miles) ⓘCerro do Algaré Mine, Almodôvar e Graça dos Padrões, Almodôvar, Beja, Portugal
4.8km (3.0 miles) ⓘBrancanes Mine, Brancanes, Almodôvar e Graça dos Padrões, Almodôvar, Beja, Portugal
6.6km (4.1 miles) ⓘNeves-Corvo Mine, Santa Bárbara de Padrões, Castro Verde, Beja, Portugal
13.5km (8.4 miles) ⓘBarrigão Mine, Santa Cruz, Almodôvar, Beja, Portugal
15.0km (9.3 miles) ⓘRosário deposit, Castro Verde e Casével, Castro Verde, Beja, Portugal
59.7km (37.1 miles) ⓘLousal Mine, Azinheira dos Barros, Grândola, Setúbal, Portugal
82.6km (51.3 miles) ⓘPreguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
References
Oliveira, Daniel P. S. de, Silva, Teresa P., Morais, Igor, Fernandes, João A. E. (2025) Chemical and Mineralogical Characterization of Waste from Abandoned Copper and Manganese Mines in the Iberian Pyrite Belt, Portugal: A First Step Towards the Waste-to-Value Recycling Process. Minerals, 15 (1). doi:10.3390/min15010058
 
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