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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Astrophyllite from
Kiihtelysvaara nepheline syenite, Joensuu, North Karelia, Finland


Locality type:Occurrence
Classification
Species:Astrophyllite
Formula:K2NaFe72+Ti2[Si4O12]2O2(OH)4F
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Astrophyllite data
Locality Data:Click here to view Kiihtelysvaara nepheline syenite, Joensuu, North Karelia, Finland
Data Identifiers
Mindat Occurrence Record ID:1374185
Long-form Identifier:1:3:1374185:1
GUID (UUID V4):0
References
Eskola, P., & SAHLSTEIN, T. (1930). On astrophyllite bearing nephelite syenite gneiss. Bull. Comm. Géol. Finlande, 92, 77-88.
 
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