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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Opal from
Carvalhal quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal


Locality type:Quarry
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Carvalhal quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
Data Identifiers
Mindat Occurrence Record ID:998666
Long-form Identifier:1:3:998666:4
GUID (UUID V4):0
References
Nuno Afonso collection
 
and/or  
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