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Tangen Feldspar Mine, Kragerø, Telemark, Norway

Photo: K.E.Larsen

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Tangen bruddet

Feldspar and quartz mine located 20 m north of Tangen farm, on the east side of the Kammerfosselven about 3-4 km west of the Kragerø town. The pegmatite which is hosted in amphibolites on the western slope of Mt. Sjåen was a irregular body about 40 m in length and 10-15 m wide.
Especially known for its large crystals of phenakite.
Collecting at the site is prohibited by the owner.

Note to mineral list:
Sharp, crystals, often twinned, of columbites found in the cleavelandite zone have been known as columbite-(Mn) for nearly a century. However, new SEM-EDS analyses done on these have showed them to be columbite-(Fe) (Selbekk et al., 2008).

Mineral List

31 entries listed. 20 valid minerals. 1 erroneous literature entry.

The above list contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Hintze, C. (1897): Ueber krystallisirten Phenakit aus Schlesien. Zeitschrift für Kristallographie und Mineralogie. 28, 174-176. [p. 176 on phenakite from Tangen]

Bäckstrom, H. (1898): Fenakit från Kragerø. Geologiska Föreningen i Stockholm Förhandlingar. 20, 295-303

Andersen, O. (1924) Statsgeologenes innberetninger for 1923. I. Kragerø omegn. Norges Geologiske Undersøkelse 122. Årbok for 1923, p. 9- 18

Bjørlykke, H. (1931): Ein betafitmineral von Tangen bei Kragerö. Norsk Geologisk Tidsskrift. 12, 73-88

Bjørlykke, H. (1937): Mineral parageneses of some granite pegmatites near Kragerø, Southern Norway. Norsk Geologisk Tidsskrift, 17,1-16.

Green, J.C. (1956): Geology of the Storkollen-Blankenberg area, Kragerø, Norway. Norsk Geologisk Tidsskrift 36, 89-140

Oftedal, I. (1963): Contributions to the mineralogy of Norway No 16. Danburite from the Kragerø District. Norsk Geologisk Tidsskrift 43, 73-74

Kristiansen, R. (1978): Lokkaitt, (Y,Ca)2(CO3)3 x 2H2O, ett nytt mineral for Norge. NAGS-nytt 5(4), 26-27 (in norwegian)

Kristiansen, R. (1994): To nye mineraler for Norge- manganokolumbitt og hingganitt-(Yb). STEIN 21 (2), 88-93

Ljøstad, O.T. (1994): Kamphaugitt-(Y)- det nyest beskrevne mineralet fra Norge. STEIN 21 (2), 143-144

Selbekk, R.S., Berg, H.-J.,Folvik, H. & Ellingsen, H.V. (2008): Mineraler i columbitt-tantalittgruppen fra Norge. Norsk Bergverksmuseum Skrift. 38, 33-36.

Rocks & Minerals: 15:77.

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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