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Birnessite from
Herdade do Ferragudo Mine, Castro Verde e Casével, Castro Verde, Beja, Portugal


Locality type:Mine
Classification
Species:Birnessite
Formula:(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Birnessite data
Locality Data:Click here to view Herdade do Ferragudo Mine, Castro Verde e Casével, Castro Verde, Beja, Portugal
Data Identifiers
Mindat Occurrence Record ID:1676833
Long-form Identifier:1:3:1676833:6
GUID (UUID V4):0
Nearest other occurrences of Birnessite
5.5km (3.4 miles) ⓘPorteirinhos Mine, Almodôvar e Graça dos Padrões, Almodôvar, Beja, Portugal
10.9km (6.8 miles) ⓘNeves-Corvo Mine, Santa Bárbara de Padrões, Castro Verde, Beja, Portugal
30.2km (18.8 miles) ⓘFerrarias e Castelo Mine, Santa Vitória e Mombeja, Beja, 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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