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
Gralheira Mine, Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, 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 Gralheira Mine, Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
Data Identifiers
Mindat Occurrence Record ID:942927
Long-form Identifier:1:3:942927:7
GUID (UUID V4):0
Nearest other occurrences of Electrum
2.2km (1.3 miles) ⓘJales Mines (Jales Mining Field), Alfarela de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
4.6km (2.9 miles) ⓘJales Mines (Jales Mining Field), Vreia de Jales, Vila Pouca de Aguiar, Vila Real, Portugal
4.6km (2.9 miles) ⓘJales Mines (Jales Mining Field), Tresminas, Vila Pouca de Aguiar, Vila Real, Portugal
30.9km (19.2 miles) ⓘLimarinho deposit, Ardãos e Bobadela, Boticas, Vila Real, Portugal
52.2km (32.4 miles) ⓘVieiros Mine, Penela da Beira, Penedono, Viseu, Portugal
52.2km (32.4 miles) ⓘSanto António Mine, U.F. Penedono e Granja, Penedono, Viseu, Portugal
56.3km (35.0 miles) ⓘNumão prospect, Numão, Vila Nova de Foz Côa, Guarda, Portugal
56.4km (35.1 miles) ⓘFerronha Mines, U.F Penedono e Granja, Penedono, Viseu, Portugal
77.6km (48.2 miles) ⓘCastromil Mines, Castromil, Sobreira, Paredes, Porto, Portugal
81.6km (50.7 miles) ⓘBanjas Mines, Sobreira, Paredes, Porto, Portugal
References
Neiva, A. M. R. (1994): Gold-​quartz veins at Gralheira, northern Portugal: mineralogical and geochemical characteristics. Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science 103, B188-B196.
Martins, S. A. B. (2018). Mineralizações auríferas de Jales, Gralheira e Raiz do Monte: estudo mineralógico e paragenético. o Mestrado em Geologia da Faculdade de Ciências da Universidade do Porto
 
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