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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Opal from
Mogadouro, Bragança, Portugal


01605360017380567401852.jpg
Opal

Mogadouro, Bragança, Portugal
09288850017271969209164.jpg
Opal

Mogadouro, Bragança, Portugal
08715910017379335509122.jpg
Opal

Mogadouro, Bragança, Portugal
07586480017379336292390.jpg
Opal

Mogadouro, Bragança, Portugal
04268340017379797966777.jpg
Opal

Mogadouro, Bragança, Portugal
02414930017367624164951.jpg
Opal

Mogadouro, Bragança, Portugal
07581180017379335415188.jpg
Opal

Mogadouro, Bragança, Portugal
02201190017379336237176.jpg
Opal

Mogadouro, Bragança, Portugal
01605360017380567401852.jpg
Opal

Mogadouro, Bragança, Portugal
09288850017271969209164.jpg
Opal

Mogadouro, Bragança, Portugal
04895700017379335519771.jpg
Opal

Mogadouro, Bragança, Portugal
09729220017379336299767.jpg
Opal

Mogadouro, Bragança, Portugal
Locality type:Municipality
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Mogadouro, Bragança, Portugal
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:772576
Long-form Identifier:1:3:772576:0
GUID (UUID V4):0
Nearest other occurrences of Opal
65.1km (40.5 miles) ⓘPortugal 1 & 2 quarries, Malpartida, Malpartida e Vale de Coelha, Almeida, Guarda, Portugal
73.8km (45.8 miles) ⓘJales Mines (Jales Mining Field), Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
89.8km (55.8 miles) ⓘRatoeira quarry, U.F. Sequeiros e Gradiz, Aguiar da Beira, Guarda, Portugal
89.9km (55.8 miles) ⓘPenedo da Cabeça quarry, U.F. Sequeiros e Gradiz, Aguiar da Beira, Guarda, Portugal
95.4km (59.3 miles) ⓘAssunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu, Portugal
97.7km (60.7 miles) ⓘGralheira Mine, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
97.9km (60.8 miles) ⓘPenouta mines, Viana do Bolo, Ourense, Galicia, Spain
98.5km (61.2 miles) ⓘFonte Limeira quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
References
Nunes, Rui (n.d.) Personal communication.
 
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