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
Serra D'Arga, Ponte de Lima, Viana do Castelo, Portugal


Classification
Species:Cassiterite
Formula:SnO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cassiterite data
Locality Data:Click here to view Serra D'Arga, Ponte de Lima, Viana do Castelo, Portugal
Data Identifiers
Mindat Occurrence Record ID:817870
Long-form Identifier:1:3:817870:1
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
1.9km (1.2 miles) ⓘEstorãos Mine, Estorãos, Ponte de Lima, Viana do Castelo, Portugal
2.5km (1.5 miles) ⓘSerra de Santa Justa No. 2 Mine, São Pedro d'Arcos, Ponte de Lima, Viana do Castelo, Portugal
2.6km (1.6 miles) ⓘUnnamed mine, Estorãos, Ponte de Lima, Viana do Castelo, Portugal
2.8km (1.7 miles) ⓘRio Âncora, Montaria, Viana do Castelo, Viana do Castelo, Portugal
3.1km (1.9 miles) ⓘCalvelo Mine, Nogueira， Meixedo e Vilar de Murteda, Viana do Castelo, Viana do Castelo, Portugal
3.7km (2.3 miles) ⓘAndorinheiras Mine, Estorãos, Ponte de Lima, Viana do Castelo, Portugal
3.8km (2.3 miles) ⓘRibeiro do Salgueiro and Covas dos Mouros Mines, Arga de Cima, Caminha, Viana do Castelo, Portugal
3.9km (2.4 miles) ⓘCapela de Nossa Senhora da Rocha Mine, Nogueira， Meixedo e Vilar de Murteda, Viana do Castelo, Viana do Castelo, Portugal
4.3km (2.7 miles) ⓘEiradas Mine, Cabração e Moreira do Lima, Ponte de Lima, Viana do Castelo, Portugal
4.5km (2.8 miles) ⓘBalsas Mine, São Pedro d'Arcos, Ponte de Lima, Viana do Castelo, Portugal
References
LNEG Museu de Jazigos Minerais Portugueses collection
 
and/or  
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