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
Fragas do Cavalo Mine, União de Freguesias de Oleiros e Amieira, Oleiros, Castelo Branco, 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 Fragas do Cavalo Mine, União de Freguesias de Oleiros e Amieira, Oleiros, Castelo Branco, Portugal
Data Identifiers
Mindat Occurrence Record ID:875324
Long-form Identifier:1:3:875324:3
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
20.6km (12.8 miles) ⓘVolta de São Mamede Mine, Janeiro de Cima e Bogas de Baixo, Fundão, Castelo Branco, Portugal
21.0km (13.0 miles) ⓘEscádia Grande Mine, Alvares, Góis, Coimbra, Portugal
25.8km (16.0 miles) ⓘVale de Pião Mine, Cadafaz e Colmeal, Góis, Coimbra, Portugal
27.2km (16.9 miles) ⓘGóis Mining Field, Góis, Coimbra, Portugal
31.2km (19.4 miles) ⓘVale da Ermida Mining Field, Unhais-o-Velho, Pampilhosa da Serra, Coimbra, Portugal
32.7km (20.3 miles) ⓘBarroca Grande Mine, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Portugal
40.7km (25.3 miles) ⓘRecheira Mine, Barco e Coutada, Covilhã, Castelo Branco, Portugal
41.2km (25.6 miles) ⓘArgimela Mine (Argemela Mine), Barco e Coutada, Covilhã, Castelo Branco, Portugal
44.2km (27.5 miles) ⓘChafariz Velho Mine, Alcains, Castelo Branco, Castelo Branco, Portugal
46.4km (28.8 miles) ⓘEspadana - Inchidro and Tapada da Vargem Mines, Lardosa, Castelo Branco, Castelo Branco, Portugal
References
LNEG/Siorminp database
 
and/or  
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