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


Locality type:Sierra
Classification
Species:Cassiterite
Formula:SnO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cassiterite data
Locality Data:Click here to view Sierra de San Cristóbal, Logrosán, Cáceres, Extremadura, Spain
Data Identifiers
Mindat Occurrence Record ID:306346
Long-form Identifier:1:3:306346:0
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
24.2km (15.0 miles) ⓘQuartz veins, Madroñera, Cáceres, Extremadura, Spain
38.1km (23.7 miles) ⓘLa Parilla Mine, Miajadas, Badajoz, 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
78.4km (48.7 miles) ⓘSan Nicolás Mine, Valle de la Serena, Badajoz, Extremadura, Spain
84.1km (52.3 miles) ⓘLas Navas, Tajo-Salor, 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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