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
Ruostesuo Mine, Kiuruvesi, North Savo, Finland


Locality type:Mine
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 Ruostesuo Mine, Kiuruvesi, North Savo, Finland
Data Identifiers
Mindat Occurrence Record ID:123331
Long-form Identifier:1:3:123331:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
58.8km (36.5 miles) ⓘKopsa, Haapajärvi, North Ostrobothnia, Finland
64.3km (39.9 miles) ⓘKatajakangas deposit, Kajaani, Kainuu, Finland
87.0km (54.1 miles) ⓘSiilinjärvi Mine, Siilinjärvi, North Savo, Finland
88.2km (54.8 miles) ⓘKiviniemi, Rautalampi, North Savo, Finland
88.5km (55.0 miles) ⓘVesiperä, Haapavesi, North Ostrobothnia, Finland
92.6km (57.6 miles) ⓘRauhala Deposit, Ylivieska, North Ostrobothnia, Finland
94.0km (58.4 miles) ⓘSiilinjärvi Carbonatite Intrusion, Siilinjärvi, North Savo, Finland
94.7km (58.9 miles) ⓘKuusilampi deposit, Sotkamo, Kainuu, Finland
References
Geological Survey of Finland 2008.Ruostesuo -Zinc Database.
 
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