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
Sierra de San Cristóbal, Logrosán, Cáceres, Extremadura, Spain


Locality type:Sierra
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Sierra de San Cristóbal, Logrosán, Cáceres, Extremadura, Spain
Data Identifiers
Mindat Occurrence Record ID:306345
Long-form Identifier:1:3:306345:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.4km (1.5 miles) ⓘMina Costanaza, Logrosán, Cáceres, Extremadura, Spain
24.2km (15.0 miles) ⓘQuartz veins, Madroñera, Cáceres, Extremadura, Spain
35.6km (22.1 miles) ⓘCastañar Cave, Castañar de Ibor, Cáceres, Extremadura, Spain
38.1km (23.7 miles) ⓘLa Parilla Mine, Miajadas, Badajoz, Extremadura, Spain
45.6km (28.3 miles) ⓘMarialina Mine (El Triunfo de San Julián Mine), Peraleda de San Román, Cáceres, Extremadura, Spain
51.1km (31.8 miles) ⓘVillar del Pedroso granite, Villar del Pedroso, Cáceres, Extremadura, Spain
56.9km (35.3 miles) ⓘLa Parrilla Mine (Adelaida open pit mine), Almoharín, Cáceres, Extremadura, Spain
73.2km (45.5 miles) ⓘValdeflórez (Valdeflores; San José de Valdeflores Mine; San José de Valdeflórez Mine), Sierra de la Mosca, Cáceres, Cáceres, Extremadura, Spain
75.9km (47.1 miles) ⓘTrasquilón, Cáceres, Cáceres, Extremadura, Spain
77.3km (48.0 miles) ⓘAldea Moret, Cáceres, Cáceres, Extremadura, Spain
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
Losantos, Emma; Borrajo, Iñigo; Losada, Iván; Boixet, Lluís; Castelo Branco, José M.; Tornos, Fernando (2025) Sn and W mineralisation in the Iberian Peninsula. Ore Geology Reviews, 179. 106542 doi:10.1016/j.oregeorev.2025.106542
 
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