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
Pena Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, 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 Pena Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
Data Identifiers
Mindat Occurrence Record ID:912947
Long-form Identifier:1:3:912947:4
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
2.6km (1.6 miles) ⓘSerra de Sequeiros Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
2.9km (1.8 miles) ⓘAvô Mine, Reriz e Gafanhão, Castro Daire, Viseu, Portugal
5.8km (3.6 miles) ⓘRibeira de Baje e Loureiro Mines, Sul, São Pedro do Sul, Viseu, Portugal
6.0km (3.7 miles) ⓘGourim Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
6.5km (4.0 miles) ⓘRegoufe Mines, Covelo de Paivó, Arouca, Aveiro, Portugal
7.1km (4.4 miles) ⓘQuinta Velha Mine, Parada de Ester e Ester, Castro Daire, Viseu, Portugal
7.1km (4.4 miles) ⓘMontemuro Mine, Parada de Ester e Ester, Castro Daire, Viseu, Portugal
8.2km (5.1 miles) ⓘJanarde e Covelo de Paivô Mining Field, Janarde, Arouca, Aveiro, Portugal
8.6km (5.4 miles) ⓘPombeiro Mines, Parada de Ester e Ester, Castro Daire, Viseu, Portugal
9.7km (6.0 miles) ⓘMoimenta Mines, Cabril, Castro Daire, Viseu, Portugal
References
LNEG - Laboratório Nacional de Energia e Geologia, Siorminp ID 1382SnW
 
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