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 de Sequeiros Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal


01074250017272331507386.jpg
Cassiterite

Serra de Sequeiros Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
01074250017272331507386.jpg
Cassiterite

Serra de Sequeiros Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
01074250017272331507386.jpg
Cassiterite

Serra de Sequeiros 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 Serra de Sequeiros Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
Data Identifiers
Mindat Occurrence Record ID:912968
Long-form Identifier:1:3:912968:9
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
2.2km (1.4 miles) ⓘAvô Mine, Reriz e Gafanhão, Castro Daire, Viseu, Portugal
2.6km (1.6 miles) ⓘPena Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
4.9km (3.1 miles) ⓘMontemuro Mine, Parada de Ester e Ester, Castro Daire, Viseu, Portugal
5.2km (3.2 miles) ⓘQuinta Velha Mine, Parada de Ester e Ester, Castro Daire, Viseu, Portugal
6.2km (3.9 miles) ⓘRegoufe Mines, Covelo de Paivó, Arouca, Aveiro, Portugal
6.6km (4.1 miles) ⓘPombeiro Mines, Parada de Ester e Ester, Castro Daire, Viseu, Portugal
6.9km (4.3 miles) ⓘJanarde e Covelo de Paivô Mining Field, Janarde, Arouca, Aveiro, Portugal
7.1km (4.4 miles) ⓘGourim Mine, U.F São Martinho das Moitas e Covas do Rio, São Pedro do Sul, Viseu, Portugal
7.2km (4.5 miles) ⓘMoimenta Mines, Cabril, Castro Daire, Viseu, Portugal
7.7km (4.8 miles) ⓘCôto do Sino Mine, Alvarenga, Arouca, Aveiro, Portugal
References
LNEG - Laboratório Nacional de Energia e Geologia, Siorminp ID 1381Sn
 
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