The Skudesundskjær locality consist of 2 small skerries about 30 x 20m and 40 x 20m large. It is the typelocality of rosenbuschite. Since 1973, the skerries is protected as a natural heritage (site of geological interest) and collecting is strictly forbidden.
References:
- Brøgger, W.C. (1887): Foreløpig meddelelse om Mineralerne paa de sydnorske augit-og nefelinsyeniters grovkornige gange. Geologiska Föreningen i Stockholm Förhandlingar 9, 247-274
- Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineral. 16. 663 pp
- Neumann, H. (1962): Contributions to the mineralogy of Norway. No 13. Rosenbuschite and its relation to Götzenite. Norsk Geologisk Tidskrift 42, 179-186
- Eldjarn, K. (1973): Fredning av Skudesundskjærene ved Barkevik. NAGS-nytt 1 (2), 11
- Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100'
- Larsen, A.O. (2001): Chemical composition of catapleiites from the syenite pegmatites in the Larvik plutonic complex, Norway. Bergverksmuseets Skrift 18, 5-9 [with analysis on catapleiites from skudesundskjær]
Mineral List:26 entries listed. 24 valid minerals. 1 type locality (valid mineral).
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