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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Marcasite from
Aparis Mine, Barrancos, Barrancos, Beja, Portugal


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Aparis Mine, Barrancos, Barrancos, Beja, Portugal
Data Identifiers
Mindat Occurrence Record ID:801556
Long-form Identifier:1:3:801556:3
GUID (UUID V4):0
Nearest other occurrences of Marcasite
20.9km (13.0 miles) ⓘPreguiça Mine, Sobral da Adiça, Moura, Beja, Portugal
49.5km (30.8 miles) ⓘMonchi Mine, Burguillos del Cerro, Badajoz, Extremadura, Spain
57.4km (35.7 miles) ⓘSotiel Mine, Sotiel-Coronada mines, Calañas, Huelva, Andalusia, Spain
58.7km (36.5 miles) ⓘFilón Norte open pit (Filón Norte Mine), Tharsis Mines, Tharsis, Alosno, Huelva, Andalusia, Spain
59.4km (36.9 miles) ⓘAlgares Mine, Portel, Portel, Évora, Portugal
64.0km (39.8 miles) ⓘHerdade da Ventosa Mine, Nossa Senhora das Neves, Beja, Beja, Portugal
66.3km (41.2 miles) ⓘMasa Valverde Mine (Valverde Mine), Beas, Huelva, Andalusia, Spain
69.9km (43.4 miles) ⓘLas Colmenitas, Santa Marta, Badajoz, Extremadura, Spain
80.4km (49.9 miles) ⓘAguablanca Mine (Agua Blanca Mine), Monesterio, Badajoz, Extremadura, Spain
87.5km (54.4 miles) ⓘMostardeira Mine, Glória, Estremoz, Évora, Portugal
References
MEMÓRIAS DO COBRE. NOTA SOBRE A CRIAÇÃO DE UM PARQUE ARQUEO-INDUSTRIAL NA MINA DA HERDADE DA MOSTARDEIRA (ESTREMOZ, PORTUGAL), José M. Brandão & João Matos, 2000
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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