Flekkeren, Skien kommune, Telemark fylke, 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.
An unnamed apatitegroup mineral is briefly described by Jamtveite et al (1997) with the formula Ca3.5(Th,U)1.5Si3O12(OH)
References
- Jamtveit, B., Dahlgren, S. & Austrheim,H. (1997): Høy-temperatur kontaktmetamorfose av kalkholdige sedimenter ved Flekkeren, Skien. Norsk Bergverksmuseums Skrift. 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. 82 : 1241 - 1254.
Mineral List
60 entries listed. 54 valid minerals.
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