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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Orthogneiss from
Atalaya Mine, Matilla de los Caños del Río, Salamanca, Castile and Leon, Spain


Locality type:Mine
Classification
Type:Orthogneiss
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Orthogneiss data
Locality Data:Click here to view Atalaya Mine, Matilla de los Caños del Río, Salamanca, Castile and Leon, Spain
Data Identifiers
Mindat Occurrence Record ID:1809008
Long-form Identifier:1:3:1809008:0
GUID (UUID V4):0
Nearest other occurrences of Orthogneiss
1.4km (0.9 miles) ⓘMatamala Mine, Matilla de los Caños del Río, Salamanca, Castile and Leon, Spain
58.7km (36.5 miles) ⓘGold deposits (incl. Saturno Mine; Los Espinos Valley), Barruecopardo, Salamanca, Castile and Leon, Spain
69.6km (43.3 miles) ⓘBarruecopardo Mine, Barruecopardo, Salamanca, Castile and Leon, Spain
References
Bermejo, Daniel; Ortega, Lorena; Barrios Sánchez, Santos; Tavazzani, Lorenzo; Castiñeiras, Pedro; Chelle-Michou, Cyril; Crespo, Elena; dos Santos Alves, Kelvin; Gómez-Barreiro, Juan (2025) Late Variscan tectonic orogenic collapse as a trigger for Sn-W mineralizing systems. U-Pb ore geochronology across the Martinamor gneissic dome (Salamanca, Spain). Ore Geology Reviews, 184. 106762 doi:10.1016/j.oregeorev.2025.106762
 
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