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 schist from
São Pedro das Águias Mine, U.F Távora e Pereiro, Tabuaço, Viseu, Portugal


Locality type:Mine
Classification
Type:Biotite schist
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite schist data
Locality Data:Click here to view São Pedro das Águias Mine, U.F Távora e Pereiro, Tabuaço, Viseu, Portugal
Data Identifiers
Mindat Occurrence Record ID:1664945
Long-form Identifier:1:3:1664945:7
GUID (UUID V4):0
References
Ramos, Violeta, Noronha, Fernando, Seltmann, Reimar, Dolgopolova, Alla, Guedes, Alexandra, Andersen, Jens, Spruženiece, Liene, Simons, Beth, Rollinson, Gavyn, Pickles, Joe, et al. (2024) São Pedro das Águias skarn: A W-(Sn) deposit from the Douro Scheelite Belt, Northern Portugal. Ore Geology Reviews, 175. 106348 doi:10.1016/j.oregeorev.2024.106348
 
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