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Biotite from
Havredal I quarry, Midtre Havredal, Havredal, Bamble, Telemark, 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
Comments:The dark mica at the locality is analyzed and found to be phlogopite.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Havredal I quarry, Midtre Havredal, Havredal, Bamble, Telemark, Norway
Data Identifiers
Mindat Occurrence Record ID:682294
Long-form Identifier:1:3:682294:1
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.4km (0.2 miles) ⓘHafredal II quarry, Midtre Havredal, Havredal, Bamble, Telemark, Norway
1.4km (0.9 miles) ⓘVestre Kjørstad 1 Quarry, Kjørstad, Bamble, Telemark, Norway
1.5km (1.0 miles) ⓘVestre Kjørstad II Quarry, Kjørstad, Bamble, Telemark, Norway
1.8km (1.1 miles) ⓘMeikjær Mine, Skjilbreia, Bamble Nickel Mines, Bamble, Telemark, Norway
1.9km (1.2 miles) ⓘStoltz Mine, Skjilbreia, Bamble Nickel Mines, Bamble, Telemark, Norway
1.9km (1.2 miles) ⓘØstre Kjørstad Quarry, Kjørstad, Bamble, Telemark, Norway
2.3km (1.4 miles) ⓘTrosby pegmatites, Trosby, Bamble, Telemark, Norway
3.3km (2.1 miles) ⓘVissestad Mine, Nystein, Bamble Nickel Mines, Bamble, Telemark, Norway
3.4km (2.1 miles) ⓘIsnes I Quarry, Bamble, Telemark, Norway
3.5km (2.2 miles) ⓘBreisand Quarry, Bamble, Telemark, Norway
References
Andersen, Olaf (1931) Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder [Feldspar II. Occurrences in the counties of Buskerud and Telemark, in several counties in Aust-Agder and in Hidra in Vest-Agder], in Feltspat II. Feltspat III. Norges Geologiske Undersøkelse 128b, 1-109 pp.15-16
Larsen, Alf Olav (2025) Pegmatittbrudd i Telemark [Pegmatite quarries in Telemark]. Alf Olav Larsen. p.1-212.p.28
 
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