(Flekkeren, Skien, Telemark, Norge)
The locality is mainly a road cut in the small dirt-road going to Svanstul, passing the lake Flekkeren. The road is cutting a metamorphed limestone/shale xenolite surrounded by monzonitic rocks belonging to the Skrim plutone. Shale-limestone xenolite (100 x 500m) went through high-grade metamorphism in a monzonitic pluton, 41 km N of Larvik.
References:
- Jamtveit, B., Dahlgren, S. & Austrheim,H. (1997): Høy-temperatur kontaktmetamorfose av kalkholdige sedimenter ved Flekkeren, Skien. Bergverksmuseet Skrift nr. 12, 5-11
- Jamtveit B., Dahlgren S. and Austrheim H. (1997): "High-grade contact metamorphism of calcareous rocks from the Oslo Rift, Southern Norway". American Mineralogist V 82, pp. 1241 - 1254.
- "New mineral species Ca3.5(Th,U)1.5Si3O12(OH) and four undescribed minerals." (Am. Min. 82, 1241–1254, 1997)
