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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Muscovite from
Gold deposits (incl. Saturno Mine; Los Espinos Valley), Barruecopardo, Salamanca, Castile and Leon, Spain


Locality type:Deposit
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Gold deposits (incl. Saturno Mine; Los Espinos Valley), Barruecopardo, Salamanca, Castile and Leon, Spain
Data Identifiers
Mindat Occurrence Record ID:1992603
Long-form Identifier:1:3:1992603:8
GUID (UUID V4):0
Nearest other occurrences of Muscovite
14.3km (8.9 miles) ⓘBarruecopardo Mine, Barruecopardo, Salamanca, Castile and Leon, Spain
27.7km (17.2 miles) ⓘHinojosa-Saucelle road, Hinojosa de Duero, Salamanca, Castile and Leon, Spain
27.8km (17.2 miles) ⓘFonte Santa Mine, Lagoaça e Fornos, Freixo de Espada à Cinta, Bragança, Portugal
29.8km (18.5 miles) ⓘAlberto pit, La Fregeneda, Salamanca, Castile and Leon, Spain
31.9km (19.8 miles) ⓘRibeira do Mosteiro Mines (Riba de Alva Mines), Poiares, Freixo de Espada à Cinta, Bragança, Portugal
32.8km (20.4 miles) ⓘFeli deposit, La Fregeneda, Salamanca, Castile and Leon, Spain
33.8km (21.0 miles) ⓘTumbo de la Caldera pegmatite, La Fregeneda, Salamanca, Castile and Leon, Spain
35.0km (21.7 miles) ⓘMari Tere mine, Lumbrales, Salamanca, Castile and Leon, Spain
40.3km (25.1 miles) ⓘCabeço da Mua Mine, Felgar e Souto da Velha, Torre de Moncorvo, Bragança, Portugal
42.0km (26.1 miles) ⓘMoncorvo Mining Field, Torre de Moncorvo, Bragança, Portugal
References
Mota, Alexandra; Sant’Ovaia, Helena; Fádon, Oscar; Noronha, Fernando (2026) The Geochemistry of Granites Associated with W-Sn Deposits of North and Central Portugal and Castilla-León in Spain. Minerals, 16 (8). doi:10.3390/min16080823
 
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