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


00971170017363677077972.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
07123790017272044885503.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
04685910017272044891982.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
00887260017272044904827.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
00243490017368726792537.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
07123790017272044885503.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
04685910017272044891982.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
00887260017272044904827.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
00971170017363677077972.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
07123790017272044885503.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
06334560017272044903182.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
00887260017272044904827.jpg
Plagioclase

Ribeira do Mosteiro Mines, Poiares, Freixo de Espada à Cinta, Bragança, Portugal
Locality type:Mine
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Ribeira do Mosteiro Mines (Riba de Alva Mines), Poiares, Freixo de Espada à Cinta, Bragança, Portugal
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:820966
Long-form Identifier:1:3:820966:5
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
17.7km (11.0 miles) ⓘBarruecopardo Mine, Barruecopardo, Salamanca, Castile and Leon, Spain
25.5km (15.8 miles) ⓘNumão prospect, Numão, Vila Nova de Foz Côa, Guarda, Portugal
38.3km (23.8 miles) ⓘCastillejo de Dos Casas, Aldea del Obispo, Salamanca, Castile and Leon, Spain
51.1km (31.7 miles) ⓘAlijó spodumene pegmatite, São Mamede de Ribatua, Alijó, Vila Real, Portugal
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) ⓘVillarino trás la Sierra, Trabazos, Zamora, Castile and Leon, Spain
78.4km (48.7 miles) ⓘErvedosa Mine (Tuela Mine), Ervedosa, Vinhais, Bragança, Portugal
79.7km (49.5 miles) ⓘLatedo, Trabazos, Zamora, Castile and Leon, Spain
80.7km (50.1 miles) ⓘSan Mamed, Rábano de Aliste, Zamora, Castile and Leon, Spain
References
Pedro Alves collection. Characterized by p-XRD
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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