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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Feldspar Group from
Casas Novas Mine, Santiago do Escoural, Montemor-o-Novo, Évora, Portugal


Locality type:Mine
Classification
Species:'Feldspar Group' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Feldspar Group data
Locality Data:Click here to view Casas Novas Mine, Santiago do Escoural, Montemor-o-Novo, Évora, Portugal
Data Identifiers
Mindat Occurrence Record ID:1972026
Long-form Identifier:1:3:1972026:7
GUID (UUID V4):0
Nearest other occurrences of Feldspar Group
15.2km (9.5 miles) ⓘMonfurado gold prospect, São Cristóvão, Montemor-o-Novo, Évora, Portugal
16.3km (10.1 miles) ⓘPedras Alvas quarry, Nossa Senhora da Vila， Nossa Senhora do Bispo e Silveiras, Montemor-o-Novo, Évora, Portugal
24.3km (15.1 miles) ⓘHerdade do João da Loira - Robrato quarry, Torrão, Alcácer do Sal, Setúbal, Portugal
32.2km (20.0 miles) ⓘPedras Pintas Mine, Cortiçadas de Lavre e Lavre, Montemor-o-Novo, Évora, Portugal
49.3km (30.6 miles) ⓘTorre (2) Mine, Redondo, Redondo, Évora, Portugal
62.8km (39.0 miles) ⓘLousal Mine, Azinheira dos Barros, Grândola, Setúbal, Portugal
81.3km (50.5 miles) ⓘMortórios quarry, Monforte, Monforte, Portalegre, Portugal
82.0km (51.0 miles) ⓘMurtosa quarry, Alter do Chão, Alter do Chão, Portalegre, Portugal
83.3km (51.7 miles) ⓘAlter Pedroso, Alter do Chão, Alter do Chão, Portalegre, Portugal
87.8km (54.6 miles) ⓘAbogaria e Ferrarias, Castelo, Sesimbra, Setúbal, Portugal
References
São Pedro, Diogo; Roseiro, José; Pedro, Jorge; Mirão, José; Fuertes-Fuente, Mercedes; Nogueira, Pedro (2026) Decoding Orogenic Gold Mineralization Types During Regional Metamorphic Evolution: Detailed Textural Analysis from a Deposit in the Ossa-Morena Zone (SW Iberia). Minerals, 16 (7). doi:10.3390/min16070709
 
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