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


Locality type:Mine
Classification
Species:Chamosite
Formula:Fe52+Al(AlSi3O10)(OH)8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chamosite data
Locality Data:Click here to view Neves-Corvo Mine, Santa Bárbara de Padrões, Castro Verde, Beja, Portugal
Data Identifiers
Mindat Occurrence Record ID:430246
Long-form Identifier:1:3:430246:9
GUID (UUID V4):0
Nearest other occurrences of Chamosite
3.5km (2.2 miles) ⓘCerro do Algaré Mine, Almodôvar e Graça dos Padrões, Almodôvar, Beja, Portugal
6.6km (4.1 miles) ⓘPorteirinhos Mine, Almodôvar e Graça dos Padrões, Almodôvar, Beja, Portugal
7.7km (4.8 miles) ⓘBarrigão Mine, Santa Cruz, Almodôvar, Beja, Portugal
10.9km (6.8 miles) ⓘHerdade do Ferragudo Mine, Castro Verde e Casével, Castro Verde, Beja, Portugal
36.4km (22.6 miles) ⓘFerrarias e Castelo Mine, Santa Vitória e Mombeja, Beja, Beja, Portugal
37.1km (23.0 miles) ⓘFeitais deposit, Aljustrel Mine, Aljustrel e Rio de Moinhos, Aljustrel, Beja, Portugal
64.9km (40.3 miles) ⓘLousal Mine, Azinheira dos Barros, Grândola, Setúbal, Portugal
96.8km (60.1 miles) ⓘMasa Valverde Mine (Valverde Mine), Beas, Huelva, Andalusia, Spain
99.3km (61.7 miles) ⓘAparis Mine, Barrancos, Barrancos, Beja, Portugal
References
Cabri, L. J., Gaspar, O. C., Lastra, R., McMahon, G. (1998) Distribution of gold in tin-rich samples from the Corvo Orebody, Portugal. The Canadian Mineralogist, 36 (5). 1347-1360
Relvas, J. M.R.S., Barriga, F. J.A.S., Ferreira, A., Noiva, P. C., Pacheco, N., Barriga, G. (2006) Hydrothermal Alteration and Mineralization in the Neves-Corvo Volcanic-Hosted Massive Sulfide Deposit, Portugal. I. Geology, Mineralogy, and Geochemistry. Economic Geology, 101 (4) 753-790 doi:10.2113/gsecongeo.101.4.753
Losantos, Emma; Borrajo, Iñigo; Losada, Iván; Boixet, Lluís; Castelo Branco, José M.; Tornos, Fernando (2025) Sn and W mineralisation in the Iberian Peninsula. Ore Geology Reviews, 179. 106542 doi:10.1016/j.oregeorev.2025.106542
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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