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-AN from
Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal


00915710017272037957384.jpg
Opal-AN, etc.

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
07233570017272037961158.jpg
Opal-AN

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
07703480017272257623078.jpg
Opal-AN

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
05380290017272257638727.jpg
Opal-AN, etc.

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
08905020017368582136718.jpg
Opal-AN, etc.

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
01121940017368582145718.jpg
Opal-AN

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
07703480017272257623078.jpg
Opal-AN

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
05380290017272257638727.jpg
Opal-AN, etc.

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
00915710017272037957384.jpg
Opal-AN, etc.

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
07233570017272037961158.jpg
Opal-AN

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
07703480017272257623078.jpg
Opal-AN

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
05380290017272257638727.jpg
Opal-AN, etc.

Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
Locality type:Quarry
Classification
Species:Opal var: Opal-AN
Formula:SiO2 · nH2O
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Associated Minerals Based on Photo Data:
Microcline8
Torbernite5
Fluorapatite4
Albite4
Hydroxylherderite3
Muscovite2
Quartz1
Data
Mineral Data:Click here to view Opal-AN data
Locality Data:Click here to view Romãs quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
Photo GalleryView Gallery (8 photos)
Data Identifiers
Mindat Occurrence Record ID:738419
Long-form Identifier:1:3:738419:6
GUID (UUID V4):0
Nearest other occurrences of Opal-AN
3.3km (2.0 miles) ⓘFonte Limeira quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
4.9km (3.0 miles) ⓘGralheira Mine, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
8.9km (5.5 miles) ⓘAssunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu, Portugal
12.5km (7.8 miles) ⓘBom Sucesso No. 4 quarry, Tavares (Chãs; Várzea e Travanca), Mangualde, Viseu, Portugal
13.2km (8.2 miles) ⓘPenedo da Cabeça quarry, U.F. Sequeiros e Gradiz, Aguiar da Beira, Guarda, Portugal
13.3km (8.3 miles) ⓘRatoeira quarry, U.F. Sequeiros e Gradiz, Aguiar da Beira, Guarda, Portugal
13.7km (8.5 miles) ⓘNossa Senhora da Esperança quarry, Quintela de Azurara, Mangualde, Viseu, Portugal
63.0km (39.2 miles) ⓘPortugal 1 & 2 quarries, Malpartida, Malpartida e Vale de Coelha, Almeida, Guarda, Portugal
68.5km (42.6 miles) ⓘPalhal Mine, Branca, Albergaria-a-Velha, Aveiro, Portugal
References
Alves, Pedro (n.d.) Personal communication.
 
and/or  
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