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Biotite from
Hellheia nordre quarry (Hellheia 2), Hellheia, 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 Hellheia nordre quarry (Hellheia 2), Hellheia, Froland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:1219218
Long-form Identifier:1:3:1219218:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.3km (0.2 miles) ⓘHellheia midtre quarry (Hellheia 1), Hellheia, Froland, Agder, Norway
0.9km (0.5 miles) ⓘRevefjell 1, Revefjell, Froland, Agder, Norway
0.9km (0.6 miles) ⓘLauvrak, Froland, Agder, Norway
1.7km (1.0 miles) ⓘMiddle Lauvrak Quarry, Lauvrak, Froland, Agder, Norway
2.0km (1.3 miles) ⓘIsaksfjell, Lauvrak, Froland, Agder, Norway
2.0km (1.3 miles) ⓘNorthern Lauvrak Quarry, Lauvrak, Froland, Agder, Norway
2.3km (1.5 miles) ⓘBlengsvatn, Froland, Agder, Norway
2.5km (1.5 miles) ⓘKolbrennerhytta, Birkenes, Agder, Norway
2.5km (1.6 miles) ⓘBjellåsen, Froland, Agder, Norway
2.6km (1.6 miles) ⓘTolltanglia South, Froland, Agder, Norway
References
Ihlen P.M., Henderson I., Larsen, R.B., Lynum R. (2001): Potensielle ressurser av kvarts- og feltspatråstoffer på Sørlandet, I: Regional prøvetakning av utvalgte feltspatbrudd i Frolandsområdet. NGU Rapport 2001.044, 46 pp.
 
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