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
Åtvidaberg licence area, Åtvidaberg Mining Field, Åtvidaberg, Östergötland County, Sweden


Locality type:Licence Area
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 Åtvidaberg licence area, Åtvidaberg Mining Field, Åtvidaberg, Östergötland County, Sweden
Data Identifiers
Mindat Occurrence Record ID:1228307
Long-form Identifier:1:3:1228307:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
25.7km (16.0 miles) ⓘSkrikerum Mine, Valdemarsvik, Östergötland County, Sweden
38.5km (23.9 miles) ⓘOlserum, Gamleby, Västervik, Kalmar County, Sweden
44.7km (27.8 miles) ⓘSätra Mine, Doverstorp ore field, Finspång, Östergötland County, Sweden
56.6km (35.2 miles) ⓘStubbetorps Sarvgöl, Kolmården, Norrköping, Östergötland County, Sweden
64.0km (39.8 miles) ⓘTranås quarry, Tranås, Jönköping County, Sweden
64.9km (40.3 miles) ⓘÖdesjön Norra quarry, Tranås, Jönköping County, Sweden
65.3km (40.5 miles) ⓘVedebo Norra quarry, Tranås, Jönköping County, Sweden
65.3km (40.6 miles) ⓘÖdesjön quarry, Tranås, Jönköping County, Sweden
65.9km (40.9 miles) ⓘKlevakrossen quarry, Tranås, Jönköping County, Sweden
67.2km (41.8 miles) ⓘLilla Kungshult quarry, Tranås, Jönköping County, Sweden
References
beowulfmining.com (2016) https://beowulfmining.com/projects/sweden/atvidaberg/#geology
 
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