| Locality type: | Outcrop |
| Classification |
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| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Fjellsjøen, Lunner, Viken, Norway |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 952400 |
| Long-form Identifier: | 1:3:952400:2 |
| GUID (UUID V4): | cee9afec-cc0f-45c9-a691-cab7902d8a6c |
| Nearest other occurrences of Biotite |
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| 4.1km (2.6 miles) | ⓘLake Gjerdingen larvikite outcrop, Jevnaker, Viken, Norway |
| 14.2km (8.8 miles) | ⓘMidtmoen, Øståsen, Lunner, Viken, Norway |
| 22.9km (14.2 miles) | ⓘSandermosen Station, Maridalen, Oslomarka, Oslo, Norway |
| 26.0km (16.2 miles) | ⓘBjønndalen Quarry, Nittedal, Viken, Norway |
| 27.9km (17.3 miles) | ⓘHuken Quarry, Grorud, Oslo, Norway |
| 28.3km (17.6 miles) | ⓘGjelleråsen, Nittedal, Viken, Norway |
| 29.2km (18.2 miles) | ⓘKristiansen Quarry (Bånkall Quarry), Bånkall, Grorud, Oslo, Norway |
| 29.7km (18.4 miles) | ⓘTonsenplassen, Oslomarka, Oslo, Norway |
| 32.2km (20.0 miles) | ⓘRambydalen Quarry, Ullensaker, Viken, Norway |
| 34.4km (21.3 miles) | ⓘSkaug Mine, Holleia, Ringerike Ni Mines, Ringerike, Buskerud, Norway |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | mineraler. Nr. 41993 Fig.3 Synchysittkrystall fra Fjellsjøen ca. 1,5 mm, foto Frode Andersen og i hulrom i...mellom- til grovkornet syenitt i en blokkmark ved Fjellsjøen (nær Gjerdingen). Krystallene er godt utviklet...Jan Haug takkes for å ha sendt oss objekter fra Fjellsjøen. Alf Olav Larsen takkes for å ha gitt oss informasjon...finds during the last couple of years, establishes Norway among the majorsources of synchysite specimens...a first inventarisation of synchysite-finds in Norway. rw Referanser -Donnay, G. & Donnay, J:D:H: (1953): |
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