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
Rauhala Deposit, Ylivieska, North Ostrobothnia, Finland


Locality type:Deposit
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 Rauhala Deposit, Ylivieska, North Ostrobothnia, Finland
Data Identifiers
Mindat Occurrence Record ID:848374
Long-form Identifier:1:3:848374:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
10.2km (6.3 miles) ⓘVesiperä, Haapavesi, North Ostrobothnia, Finland
13.4km (8.3 miles) ⓘKurula, Ylivieska, North Ostrobothnia, Finland
26.7km (16.6 miles) ⓘHuhta deposit, Kalajoki, North Ostrobothnia, Finland
27.9km (17.3 miles) ⓘJouhineva, Rautio, Kalajoki, North Ostrobothnia, Finland
38.6km (24.0 miles) ⓘKopsa, Haapajärvi, North Ostrobothnia, Finland
49.7km (30.9 miles) ⓘHirvikangas, Kalajoki, North Ostrobothnia, Finland
54.6km (33.9 miles) ⓘLaivakangas-N (Näädänmaa; Näädänmalmi), Raahe, North Ostrobothnia, Finland
59.1km (36.7 miles) ⓘKoivusaarenneva, Kälviä, Kokkola, Central Ostrobothnia, Finland
92.6km (57.6 miles) ⓘRuostesuo Mine, Kiuruvesi, North Savo, Finland
98.8km (61.4 miles) ⓘKatajakangas deposit, Kajaani, Kainuu, Finland
References
Kojonen Kari 1989. The early Proterozoic Zn-Cu-Zn sulphide deposit of Rauhala in Ylivieska Western Finland. Geological Survey of Finland, Special Paper 11
 
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