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
Santa Eulália Mine (Fontalva), Santa Eulália, Elvas, Portalegre, Portugal


Locality type:Mine
Classification
Species:Cassiterite
Formula:SnO2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Cassiterite data
Locality Data:Click here to view Santa Eulália Mine (Fontalva), Santa Eulália, Elvas, Portalegre, Portugal
Data Identifiers
Mindat Occurrence Record ID:877693
Long-form Identifier:1:3:877693:8
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
0.3km (0.2 miles) ⓘSanta Eulália Mining Field, Santa Eulália, Elvas, Portalegre, Portugal
60.9km (37.9 miles) ⓘPoio Mine, Espírito Santo - Nossa Senhora da Graça e São Simão, Nisa, Portalegre, Portugal
60.9km (37.9 miles) ⓘPoio Mine, Amieira do Tejo, Nisa, Portalegre, Portugal
89.8km (55.8 miles) ⓘTrasquilón, Cáceres, Cáceres, Extremadura, Spain
94.5km (58.7 miles) ⓘSegura Mines (Segura mining field), União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
95.0km (59.0 miles) ⓘCerro Queimado, União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
96.9km (60.2 miles) ⓘValdeflórez (Valdeflores; San José de Valdeflores Mine; San José de Valdeflórez Mine), Sierra de la Mosca, Cáceres, Cáceres, Extremadura, Spain
References
LNEG/Siorminp database
 
and/or  
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