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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Quartz from
Fontao mines, Silleda, Pontevedra, Galicia, Spain


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Fontao mines, Silleda, Pontevedra, Galicia, Spain
Data Identifiers
Mindat Occurrence Record ID:1651416
Long-form Identifier:1:3:1651416:0
GUID (UUID V4):0
Localities for Quartz in this Region
Angelita Mine, Fontao mines, Silleda, Pontevedra, Galicia, Spain
Tiro and Sidón mines, Fontao mines, Silleda, Pontevedra, Galicia, Spain
Nearest other occurrences of Quartz
6.9km (4.3 miles) ⓘForcarei Norte pegmatite field, Silleda, Pontevedra, Galicia, Spain
10.4km (6.5 miles) ⓘLalín pegmatite field, Lalín, Pontevedra, Galicia, Spain
14.8km (9.2 miles) ⓘEl Campo pegmatite, Forcarei Norte pegmatite field, Silleda, Pontevedra, Galicia, Spain
14.9km (9.2 miles) ⓘPresqueira pegmatite, Forcarei South pegmatite field, Forcarei, Pontevedra, Galicia, Spain
26.2km (16.3 miles) ⓘPanceiros pegmatite, Campo Lameiro, Pontevedra, Galicia, Spain
29.3km (18.2 miles) ⓘSerrabal Mine, Vedra, A Coruña, Galicia, Spain
31.0km (19.3 miles) ⓘEntrerríos, A Laxe, Fornelos de Montes, Pontevedra, Galicia, Spain
34.1km (21.2 miles) ⓘTouro Copper Project, Touro, A Coruña, Galicia, Spain
34.1km (21.2 miles) ⓘArienteiro deposit, Touro Copper Project, Touro, A Coruña, Galicia, Spain
38.3km (23.8 miles) ⓘFornás Mine, Aríns, Santiago de Compostela, A Coruña, Galicia, Spain
References
Borrajo, Iñigo; Tornos, Fernando; Stein, Holly; Hanchar, John M. (2024) Geochronology and decoupling controls of Sn-(Ta-Li) and W-(Sn) mineralization in the Iberian Variscan Massif, Spain and Portugal. Ore Geology Reviews, 173. 106253 doi:10.1016/j.oregeorev.2024.106253
Losantos, Emma; Borrajo, Iñigo; Losada, Iván; Boixet, Lluís; Castelo Branco, José M.; Tornos, Fernando (2025) Sn and W mineralisation in the Iberian Peninsula. Ore Geology Reviews, 179. 106542 doi:10.1016/j.oregeorev.2025.106542
 
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