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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Biotite from
Mount Ermelo, Moaña, Pontevedra, Galicia, Spain


Locality type:Mountain
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Mount Ermelo, Moaña, Pontevedra, Galicia, Spain
Data Identifiers
Mindat Occurrence Record ID:1662200
Long-form Identifier:1:3:1662200:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
20.3km (12.6 miles) ⓘCillarga Quarry, Ponteareas, Pontevedra, Galicia, Spain
20.7km (12.8 miles) ⓘPorriño quarries, Porriño, Pontevedra, Galicia, Spain
34.9km (21.7 miles) ⓘA Franqueira, A Cañiza, Pontevedra, Galicia, Spain
35.6km (22.1 miles) ⓘPanceiros pegmatite, Campo Lameiro, Pontevedra, Galicia, Spain
47.7km (29.7 miles) ⓘValdarcas Mine, Covas, Vila Nova de Cerveira, Viana do Castelo, Portugal
48.4km (30.1 miles) ⓘAplito-pegmatitic area, Covas, Vila Nova de Cerveira, Viana do Castelo, Portugal
51.4km (32.0 miles) ⓘSan Finx Mines, Vilacova, Lousame, A Coruña, Galicia, Spain
55.0km (34.1 miles) ⓘForcarei Norte pegmatite field, Silleda, Pontevedra, Galicia, Spain
55.9km (34.7 miles) ⓘCabanas Mine, Arcozelo, Ponte de Lima, Viana do Castelo, Portugal
56.7km (35.2 miles) ⓘFontao mines, Silleda, Pontevedra, Galicia, Spain
References
Vérez, Guillermo Z., Vázquez, Carlos J. Rodríguez, Mariño, Bruno Dacuña, Cereijo, Inés Fernández, del Tánago, José González, Martínez, Ramón Jiménez, Pérez, Ramiro Barreiro, Segurado, Raquel Antón, Fernández, Ezequiel Vázquez, Dopazo, Montse Gómez, et al. (2024) Ermeloite, AlPO4⋅H2O a new phosphate mineral with kieserite-type structure from Galicia, Spain. Mineralogical Magazine, 88 (4). 412-420 doi:10.1180/mgm.2024.33
 
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