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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Cordierite from
Otero de Herreros area, Segovia, Castile and Leon, Spain


Locality type:Deposit
Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Otero de Herreros area, Segovia, Castile and Leon, Spain
Data Identifiers
Mindat Occurrence Record ID:1992684
Long-form Identifier:1:3:1992684:3
GUID (UUID V4):0
Nearest other occurrences of Cordierite
51.3km (31.8 miles) ⓘLa Cabrera pluton, La Cabrera, Community of Madrid, Spain
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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