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Biotite from
Stryker I Feldspar Quarry, Degernes, Rakkestad, Østfold, 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 Stryker I Feldspar Quarry, Degernes, Rakkestad, Østfold, Norway
Data Identifiers
Mindat Occurrence Record ID:1779943
Long-form Identifier:1:3:1779943:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.5km (1.6 miles) ⓘOrud quarry, Rakkestad, Østfold, Norway
6.9km (4.3 miles) ⓘRolfseide 2, Rakkestad, Østfold, Norway
10.7km (6.7 miles) ⓘVestgård Feldspar Quarry, Skjeberg, Sarpsborg, Østfold, Norway
11.3km (7.0 miles) ⓘHåkenbyfjellet, Halden, Østfold, Norway
18.7km (11.6 miles) ⓘFosby Feldspar Quarry, Berg, Halden, Østfold, Norway
19.3km (12.0 miles) ⓘLundestad, Berg, Halden, Østfold, Norway
21.5km (13.4 miles) ⓘVestgård, Berg, Halden, Østfold, Norway
22.9km (14.2 miles) ⓘThe monolith quarry, Idd, Halden, Østfold, Norway
23.5km (14.6 miles) ⓘHerrebøkasa, Aspedammen, Idd, Halden, Østfold, Norway
29.5km (18.3 miles) ⓘBakke Quarry, Idd, Halden, Østfold, Norway
References
Broch, Olaf Anton (1934) Feltspat IV. Forekomster i Akershus og Østfold øst for Glomma [Feldspar IV. Occurrences in Akershus and Østfold east of Glomma]. Norges Geologiske Undersøkelse 141. Norges Geologiske Undersøkelse (NGU) p.1-119. pp.68-70
 
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