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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Siltstone from
Neves-Corvo Mine, Santa Bárbara de Padrões, Castro Verde, Beja, Portugal


Locality type:Mine
Classification
Type:Siltstone
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Siltstone data
Locality Data:Click here to view Neves-Corvo Mine, Santa Bárbara de Padrões, Castro Verde, Beja, Portugal
Data Identifiers
Mindat Occurrence Record ID:1966356
Long-form Identifier:1:3:1966356:4
GUID (UUID V4):0
Nearest other occurrences of Siltstone
20.8km (12.9 miles) ⓘRosário deposit, Castro Verde e Casével, Castro Verde, Beja, Portugal
References
Morais, Igor; Albardeiro, Luís; Rosado, Lúcia; Mirão, José; Matos, João Xavier; Batista, Maria João; Silva, Teresa; Barrulas, Pedro; Oliveira, Daniel (2026) A New Geochemistry Exploration Method to Identify Deep VMS-Type Deposits—Application to the Cu-Zn Neves-Corvo Deposit, Iberian Pyrite Belt. Minerals, 16 (6). doi:10.3390/min16060607
 
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