Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Fen Complex, Nome, Telemark, Norway

This page is currently not sponsored. Click here to sponsor this page.
Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 59° North , 9° East (est.)
Margin of Error:~1km
Name(s) in local language(s):Fensfeltet, Nome kommune, Telemark fylke, Norge
Other regions containing this locality:Scandinavia

Famous for its rare volcanic/meta-volcanic rocks:

Carbonatites: søvite (coarse-grained calcite carbonatite), rødberg (altered carbonatite with hematite stained granular calcite, dolomite and sometimes ankerite), rauhaugite (dolomite carbonatite), ringite (coars-grained carbonatite containing aegirine and alkali-feldspar).
Lamprophyres: damkjernite (melanocratic nepheline lamprophyre).
Ijolites: melteigite (melanocratic nepheline ijolite), hollaite (calcite-melteigite, consisting of pyroxene (55%), calcite and nepheline).
Other rocks: fenite (metasomatic rock composed of alkali feldspar, sodic pyroxene and/or alkali amphibole, sometimes monomineralic alkali feldspar rock), vibetoite (pyroxenite containing aboundant Ti-augite and hornblende with biotite, primary calcite, and occasional albite and nepheline).

Many of the rocks were first described by W. C. Brøgger in 1921.
Most areas of the complex are now protected because of its value to science, and collecting is prohibited!

Mineral List

Mineral list contains entries from the region specified including sub-localities

68 valid minerals.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Localities in this Region

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Brøgger, W.C. (1921) Die Eruptivgesteine des Kristianiagebietes. IV. Das Fengebiet in Telemark, Norwegen. Skrifter udgit av Videnskabsselskabet i Kristiania. I. Math. Nat. Klasse. No.9, p. 1-408.

Aubert, F.(1947): Identifisering av de Nb-Ta-førende mineraler i søvitt, og forsøk på deres magnetiske separasjon. Tidsskrift for kjemi, Bergvesen og Metallurgi. 7, 169-171

Bjørlykke, (1953): Utnytting av Søvemalm. Tidsskrift for Kjemi, Bergvesen og Metallurgi. 13, 47-48.

Sørum, H.(1955): Contribution to the mineralogy of Søve deposit. I. X-ray identification of accessory minerals. Det Konglige Norske Videnskabsselskap Forhandlinger, B 28, 112-119.

Sørum, H.(1955): Contribution to the Mineralogy of the Søve Deposit. II. X-ray and thermal studies of the niobium minerals. Det Konglige Norske Videnskabsselskap Forhandlinger, B 28, 120-127

Sæther, E.(1957): The alkaline rock province of the Fen area in southern Norway. Det Konglige Norske Videnskabsselskaps Skrifter 1957, 1, 150p.

Barth,, T.F.W. & Ramberg, I.B. (1966): The Fen circular complex. In Tuttle, O.F. & Gittins, J.(eds). Carbonatites. Interscience, New York, USA. 225-257

Griffin, W.L. (1973): Lherzolite nodules from the Fen alkaline complex, Norway. Contributions to Mineralogy and Petrolology: 38: 135-146.

Åmli, R. (1977): Carbonatites, a possible source of Scandium as indicated by Sc-mineralization in the Fen peralkaline complex, Southern Norway. Economic Geology 72: 855-859

Andersen, T. (1984) Secondary processes in carbonatites: petrology of "rødberg" (hematite-calcite-dolomite carbonatite) in the Fen central complex, Telemark (south Norway). Lithos: 17: 227-245.

Andersen, T. (1986) Compositional variation of some rare earth minerals from the Fen complex (Telemark, SE Norway): implications for the mobility of rare earths in a carbonatite system. Mineralogical Magazine: 50: 503-509.

Andersen, T. (1988) Evolution of peralkaline calcite carbonatite magmas. Experimentally determined trace and minor element partitioning in the Fen complex, southeast Norway. Lithos: 22: 99-112.

Andersen, T. (1989): Carbonatite-related contact metasomatism in the Fen complex, Norway: effects and petrogenetic implications. Mineralogical Magazine. 53: 395-414

Dahlgren, S. (1993): Fensfeltet-et stykke eksplosiv geologi. Stein. 20 (3), 146-155

Årtveit, J. T. (2014): Fensfeltet. Fensfeltet Geologiforening, Ulefoss 2014, 192p.

External Links

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 25, 2017 01:54:47 Page generated: September 8, 2017 13:11:57
Go to top of page