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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Quartz from
Valdeflórez (Valdeflores; San José de Valdeflores Mine; San José de Valdeflórez Mine), Sierra de la Mosca, Cáceres, Cáceres, Extremadura, Spain


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Montebrasite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Valdeflórez (Valdeflores; San José de Valdeflores Mine; San José de Valdeflórez Mine), Sierra de la Mosca, Cáceres, Cáceres, Extremadura, Spain
Data Identifiers
Mindat Occurrence Record ID:637620
Long-form Identifier:1:3:637620:8
GUID (UUID V4):0
Nearest other occurrences of Quartz
4.5km (2.8 miles) ⓘAldea Moret, Cáceres, Cáceres, Extremadura, Spain
8.6km (5.3 miles) ⓘTrasquilón, Cáceres, Cáceres, Extremadura, Spain
24.1km (15.0 miles) ⓘLas Navas, Tajo-Salor, Cáceres, Extremadura, Spain
47.9km (29.7 miles) ⓘLa Parrilla Mine (Adelaida open pit mine), Almoharín, Cáceres, Extremadura, Spain
49.8km (30.9 miles) ⓘLa Parilla Mine, Miajadas, Badajoz, Extremadura, Spain
51.0km (31.7 miles) ⓘQuartz veins, Madroñera, Cáceres, Extremadura, Spain
61.1km (37.9 miles) ⓘLa Paloma Mine, Zarza la Mayor, Cáceres, Extremadura, Spain
67.5km (41.9 miles) ⓘCerro Queimado, União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
68.4km (42.5 miles) ⓘSegura Mines (Segura mining field), União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
69.4km (43.1 miles) ⓘSalvaterra do Extremo Mines, União das Freguesias de Monfortinho e Salvaterra de Extremo, Idanha-a-Nova, Castelo Branco, Portugal
References
Weibel, Max (1954) Zur Lagerstättenkunde Westspaniens. Überblick über die Petrographie und mineralogische Beschreibung der Lagerstätten Zentral-Estremaduras. Heidelberger Beiträge zur Mineralogie und Petrographie, 4 (5). 379-411 doi:10.1007/bf01136985
Borrajo, Iñigo; Tornos, Fernando; Stein, Holly; Hanchar, John M. (2024) Geochronology and decoupling controls of Sn-(Ta-Li) and W-(Sn) mineralization in the Iberian Variscan Massif, Spain and Portugal. Ore Geology Reviews, 173. 106253 doi:10.1016/j.oregeorev.2024.106253
 
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