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
Sivakkaharju, Kuusamo, North Ostrobothnia, Finland


Locality type:Prospect
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 Sivakkaharju, Kuusamo, North Ostrobothnia, Finland
Data Identifiers
Mindat Occurrence Record ID:108742
Long-form Identifier:1:3:108742:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.4km (0.8 miles) ⓘKonttiaho, Kuusamo, North Ostrobothnia, Finland
1.7km (1.1 miles) ⓘHonkilehto, Kuusamo, North Ostrobothnia, Finland
1.9km (1.2 miles) ⓘMeurastuksenaho, Kuusamo, North Ostrobothnia, Finland
8.2km (5.1 miles) ⓘSäynäjävaara, Kuusamo, North Ostrobothnia, Finland
11.5km (7.2 miles) ⓘPohjaslampi, Kuusamo, North Ostrobothnia, Finland
12.0km (7.5 miles) ⓘKouvervaara, Kuusamo, North Ostrobothnia, Finland
13.0km (8.0 miles) ⓘHangaslampi, Kuusamo, North Ostrobothnia, Finland
13.0km (8.1 miles) ⓘJuomasuo, Kuusamo, North Ostrobothnia, Finland
52.7km (32.7 miles) ⓘIivaara Intrusion (Ijola), Kuusamo, North Ostrobothnia, Finland
60.2km (37.4 miles) ⓘMustavaara, Taivalkoski, North Ostrobothnia, Finland
References
Geological Survey of Finland 2008. Sivakkaharju - Gold Database
Eilu, Pasi (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining. Rovaniemi.
 
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