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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Electrum from
Serra de Pias Mines, Valongo, Valongo, Porto, Portugal


Locality type:Mine
Classification
Species:Native Gold var: Electrum
Formula:(Au,Ag)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Electrum data
Locality Data:Click here to view Serra de Pias Mines, Valongo, Valongo, Porto, Portugal
Data Identifiers
Mindat Occurrence Record ID:925852
Long-form Identifier:1:3:925852:5
GUID (UUID V4):0
Nearest other occurrences of Electrum
7.7km (4.8 miles) Castromil Mines, Castromil, Sobreira, Paredes, Porto, Portugal
10.5km (6.5 miles) Banjas Mines, Sobreira, Paredes, Porto, Portugal
10.5km (6.5 miles) Banjas Mines, Melres, Gondomar, Porto, Portugal
74.0km (46.0 miles) Mãos Mine, Estorãos, Ponte de Lima, Viana do Castelo, Portugal
79.4km (49.3 miles) Jales Mines (Jales Mining Field), Vreia de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
79.4km (49.3 miles) Jales Mines (Jales Mining Field), Tresminas, Vila Pouca de Aguiar, Vila Real, Portugal
82.0km (50.9 miles) Jales Mines (Jales Mining Field), Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
84.0km (52.2 miles) Gralheira Mine, Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
91.1km (56.6 miles) Santo António Mine, U.F. Penedono e Granja, Penedono, Viseu, Portugal
91.1km (56.6 miles) Vieiros Mine, Penela da Beira, Penedono, Viseu, Portugal
References
 
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