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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Biotite from
Lilla Silpinge, Bräkne Hoby, Ronneby, Blekinge County, Sweden


Locality type:Quarry
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 Lilla Silpinge, Bräkne Hoby, Ronneby, Blekinge County, Sweden
Data Identifiers
Mindat Occurrence Record ID:275424
Long-form Identifier:1:3:275424:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.5km (1.5 miles) ⓘVästra Ryd, Bräkne Hoby, Ronneby, Blekinge County, Sweden
7.5km (4.6 miles) ⓘBråtabron, Backaryd, Ronneby, Blekinge County, Sweden
10.1km (6.3 miles) ⓘRumpelid, Åryd, Karlshamn, Blekinge County, Sweden
21.0km (13.1 miles) ⓘStockholmsledet, Karlshamn, Blekinge County, Sweden
50.7km (31.5 miles) ⓘIvö klack Quarry, Ivö, Kristianstad, Skåne County, Sweden
86.3km (53.6 miles) ⓘBoleken, Rydaholm, Värnamo, Jönköping County, Sweden
89.1km (55.4 miles) ⓘBredakärr, Rydaholm, Värnamo, Jönköping County, Sweden
89.1km (55.4 miles) ⓘStenshuvud, Södra Mellby, Simrishamn, Skåne County, Sweden
90.3km (56.1 miles) ⓘHögåsa, Rydaholm, Värnamo, Jönköping County, Sweden
References
Sundius, N. (1951) Kvarts, fältspat och glimmer samt förekomster därav i Sverige. Sveriges Geologiska Undersökning (SGU), Serie C 520, Årsbok 45
 
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