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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Tetrahedrite Subgroup from
Gralheira Mine, Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal


Locality type:Mine
Classification
Species:'Tetrahedrite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)Sb4S12S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tetrahedrite Subgroup data
Locality Data:Click here to view Gralheira Mine, Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
Data Identifiers
Mindat Occurrence Record ID:942923
Long-form Identifier:1:3:942923:9
GUID (UUID V4):0
Nearest other occurrences of Tetrahedrite Subgroup
2.2km (1.3 miles) ⓘJales Mines (Jales Mining Field), Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
4.6km (2.9 miles) ⓘJales Mines (Jales Mining Field), Vreia de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
4.6km (2.9 miles) ⓘJales Mines (Jales Mining Field), Tresminas, Vila Pouca de Aguiar, Vila Real, Portugal
42.3km (26.3 miles) ⓘVárzea de Trevões Mine, U.F S.J.da Pesqueira e Várzea de Trevões, São João da Pesqueira, Viseu, Portugal
63.1km (39.2 miles) ⓘVinha da Mina Mine, Mogadouro， Valverde， Vale de Porco e Vilar de Rei, Mogadouro, Bragança, Portugal
74.4km (46.2 miles) ⓘFeli deposit, La Fregeneda, Salamanca, Castile and Leon, Spain
80.1km (49.8 miles) ⓘTerramonte Mine, Raiva, Castelo de Paiva, Aveiro, Portugal
85.5km (53.1 miles) ⓘPortal Mine, Lomba, Gondomar, Porto, Portugal
References
Neiva, A. M. R. (1994): Gold-​quartz veins at Gralheira, northern Portugal: mineralogical and geochemical characteristics. Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science 103, B188-B196.
Martins, S. A. B. (2018). Mineralizações auríferas de Jales, Gralheira e Raiz do Monte: estudo mineralógico e paragenético. o Mestrado em Geologia da Faculdade de Ciências da Universidade do Porto
 
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