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Bratthagen 1 road cut pegmatites (Bratthagen), Lågendalen, Hedrum, Larvik, Vestfold, Norway

Roadcut along RV 40 (former RV 8). The locality consists of several nepheline syenite pegmatites, usually 10-30 cm thick, often rather irregularly cross-cutting. Nearly 60 different mineral species have been found in the dikes. Because of its complex and scientifically interesting mineralogy, the locality has been protected by law since 1984.




References:
- Sæbø, P. (1966a): A short comment on some Norwegian mineral deposits within the igneous rock complex of the Oslo region. Norsk Geologisk Tidsskrift 46, 260-261

- Sæbø, P. (1966b): Contribution to the mineralogy of Norway no.35. The first occurences of the rare mineral barylite, Be2BaSi2O7, in Norway. Norsk Geologisk Tidsskrift 46, 335-348

-Raade, G. & Mladeck, M. H. (1977): Parakeldyshite from Norway. Canadian Mineralogist 15,102-107

- Larsen, A. O. (1988): Helvite group minerals from syenite pegmatites in the Oslo Region, Norway. Contribution to the mineralogy of Norway no 68. Norsk Geologisk Tidsskrift 68: 119-124 [with analysis of genthelvite from Bratthagen 1]

- Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71

-Larsen, A. O., Raade, G. & Sæbø, P. C. (1992): Lorenzenite from the Bratthagen nepheline syenite pegmatites, Lågendalen, Oslo Region, Norway. Norsk Geologisk Tidsskrift, 72, 381-384.

- Larsen, A. O. (2001): Chemical composition of catapleiites from the syenite pegmatites in the Larvik plutonic complex, Norway. Bergverksmuseets Skrift 18, 5-9 [with an analysis of catapleiite from Bratthagen]

- http://home.c2i.net/aolarsen/Pegmatites.htm





Mineral List:
Aegirine
Albite
Analcime
Ancylite-(Ce)
Anglesite
'Apatite'
Astrophyllite
Barylite
Bastnäsite-(Ce)
Biotite
Böhmite
Cancrinite
Catapleiite
Chrysoberyl
Diaspore
Epididymite
Eudialyte
Eudidymite
Fluorite
Genthelvite
Gibbsite
Gonnardite
Hilairite
Ilmenite
Keldyshite
Leucophanite
Loparite-(Ce)
Lorenzenite
Magnetite
Meliphanite
Monazite-(Ce)
Muscovite
Natrolite
Nepheline
Nordstrandite
Parakeldyshite
Polylithionite
Pyrochlore
Pyrophanite
Rosenbuschite
Sodalite
Sphalerite
'Thomsonite'
Thorite
Titanite
Willemite
Zircon


47 entries listed. 44 valid minerals.

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