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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Greywacke from
Ribeira do Mosteiro Mines (Riba de Alva Mines), Poiares, Freixo de Espada à Cinta, Bragança, Portugal


Locality type:Mine
Classification
Type:Greywacke
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Greywacke data
Locality Data:Click here to view Ribeira do Mosteiro Mines (Riba de Alva Mines), Poiares, Freixo de Espada à Cinta, Bragança, Portugal
Data Identifiers
Mindat Occurrence Record ID:1016604
Long-form Identifier:1:3:1016604:0
GUID (UUID V4):0
Nearest other occurrences of Greywacke
25.5km (15.8 miles) ⓘNumão prospect, Numão, Vila Nova de Foz Côa, Guarda, Portugal
39.9km (24.8 miles) ⓘBarquilla Sn-Ge-Cd-Cu-Fe Deposit, Villar de la Yegua, Salamanca, Castile and Leon, Spain
54.0km (33.5 miles) ⓘSão Pedro das Águias Mine, U.F Távora e Pereiro, Tabuaço, Viseu, Portugal
77.5km (48.2 miles) ⓘLa Canalita Sn-rich pegmatitic dykes, Peñaparda, Salamanca, Castile and Leon, Spain
78.4km (48.7 miles) ⓘVillasrubias project, Villasrubias, Salamanca, Castile and Leon, Spain
84.7km (52.6 miles) ⓘLamas de Olo pluton, Vila Marim, Vila Real, Vila Real, Portugal
88.0km (54.7 miles) ⓘEl Cubito Mine (Grupo minero Las Españas), Carrascal de Barregas, Salamanca, Castile and Leon, Spain
References
Gaspar, L. M.; Inverno, C. M. C. (2000) Mineralogy and Metasomatic Evolution of Distal Strata-Bound Scheelite Skarns in the Riba de Alva Mine, Northeastern Portugal. Economic Geology, 95 (6). p.1259-1275. doi:10.2113/gsecongeo.95.6.1259
 
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