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
A Seara do Soito Mine, U.F Boa Aldeia， Farminhão e Torredeita, Viseu, Viseu, Portugal


Locality type:Mine
Classification
Species:Cassiterite
Formula:SnO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cassiterite data
Locality Data:Click here to view A Seara do Soito Mine, U.F Boa Aldeia， Farminhão e Torredeita, Viseu, Viseu, Portugal
Data Identifiers
Mindat Occurrence Record ID:913449
Long-form Identifier:1:3:913449:2
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
2.6km (1.6 miles) ⓘCantarinhos Mine, U.F Boa Aldeia， Farminhão e Torredeita, Viseu, Viseu, Portugal
3.7km (2.3 miles) ⓘVale da Fonte Mine, U.F S.Miguel de Outeiro e Sabogosa, Tondela, Viseu, Portugal
6.1km (3.8 miles) ⓘBandeira do Pisco MIne, U.F Vilar de Besteiros Monteiro de Fráguas, Tondela, Viseu, Portugal
6.9km (4.3 miles) ⓘSobrosa Mine, Santiago de Besteiros, Tondela, Viseu, Portugal
7.1km (4.4 miles) ⓘBejanca e Bodiosa Mining Field, U.F Couto de Cima e Couto de Baixo, Viseu, Viseu, Portugal
7.8km (4.8 miles) ⓘSenhora do Crasto Mine, São Cipriano e Vil do Souto, Viseu, Viseu, Portugal
7.8km (4.8 miles) ⓘFonte da Senhora Mine, São Cipriano e Vil do Souto, Viseu, Viseu, Portugal
8.2km (5.1 miles) ⓘBejanca Mine (Carvalhal do Estanho), Queirã, Vouzela, Viseu, Portugal
10.1km (6.3 miles) ⓘVermilhas No. 1 Mine, U.F Cambra e Carvalhal de Vermilhas, Vouzela, Viseu, Portugal
10.6km (6.6 miles) ⓘPinhais da Tapada Mine, U.F Fataunos e Figueiredo das Donas, Vouzela, Viseu, Portugal
References
LNEG - Laboratório Nacional de Energia e Geologia, Siorminp ID 2018SnW
 
and/or  
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