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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
Kråkevatnet 1 (Kråkevasstoet), Kråkevatnet, Hinnebu, Mykland, Froland, Agder, Norway


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 Kråkevatnet 1 (Kråkevasstoet), Kråkevatnet, Hinnebu, Mykland, Froland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:1388258
Long-form Identifier:1:3:1388258:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.4km (0.2 miles) ⓘKråkevatnet, Hinnebu, Mykland, Froland, Agder, Norway
1.4km (0.9 miles) ⓘFisketjønn (Bjellåsen 6), Bjellåsen, Froland, Agder, Norway
1.5km (0.9 miles) ⓘNordre Bjellåsen (Bjellåsen 5), Bjellåsen, Froland, Agder, Norway
1.7km (1.1 miles) ⓘBjellåsen, Froland, Agder, Norway
2.0km (1.2 miles) ⓘSauetjennheia, Birkenes, Agder, Norway
2.1km (1.3 miles) ⓘRundomsmyråsen, Froland, Agder, Norway
2.4km (1.5 miles) ⓘBlengsvatn, Froland, Agder, Norway
2.5km (1.5 miles) ⓘMassævatnet 1, Hinnebu, Mykland, Froland, Agder, Norway
2.6km (1.6 miles) ⓘMiddagsknatten west, Froland, Agder, Norway
2.6km (1.6 miles) ⓘIsaksfjell, Lauvrak, Froland, Agder, Norway
References
Geological Survey of Norway. The Industrial Mineral Database. Deposit 919 - 400. Kråkevasstoet
 
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