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
Poço das Fragas Mine, Bordonhos, São Pedro do Sul, Viseu, 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 Poço das Fragas Mine, Bordonhos, São Pedro do Sul, Viseu, Portugal
Data Identifiers
Mindat Occurrence Record ID:856922
Long-form Identifier:1:3:856922:6
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
2.2km (1.3 miles) ⓘGândara Mine, São Félix, São Pedro do Sul, Viseu, Portugal
3.9km (2.4 miles) ⓘQuinta do Valente Mine, U.F São Pedro Sul， Várzea e Baiões, São Pedro do Sul, Viseu, Portugal
6.2km (3.9 miles) ⓘRibeira de Baje e Loureiro Mines, Sul, São Pedro do Sul, Viseu, Portugal
6.5km (4.1 miles) ⓘPinhais da Tapada Mine, U.F Fataunos e Figueiredo das Donas, Vouzela, Viseu, Portugal
7.6km (4.7 miles) ⓘRegada Mine, Serrazes, São Pedro do Sul, Viseu, Portugal
8.1km (5.0 miles) ⓘBejanca Mine (Carvalhal do Estanho), Queirã, Vouzela, Viseu, Portugal
9.1km (5.7 miles) ⓘGourim Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
9.7km (6.0 miles) ⓘBejanca e Bodiosa Mining Field, U.F Couto de Cima e Couto de Baixo, Viseu, Viseu, Portugal
11.5km (7.2 miles) ⓘPena Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
12.6km (7.8 miles) ⓘRegoufe Mines, Covelo de Paivó, Arouca, Aveiro, Portugal
References
LNEG - Siorminp database information
 
and/or  
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