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This report documents the petrography of a limited sample set consisting of 12 specimens from the Fen complex, Telemark, South Norway. The samples comprise several, texturally variable calciocarbonatites (søvite), one Fe-rich carbonatite (rauhaugite), two magnetite-rich rødbergites, a silico-carbonate rock ("vipetoite") and a lamprophyre termed damtjernite.
NGU conducted an airborne geophysical survey around Kongsberg region covering Krøderen, Sokna, Høneføss, Kongsberg, Vikersund, Hokksund and Hvittingfoss regions during 2008-2011. This report describes and documents the acquisition, processing and visualization of recorded datasets. The geophysical survey preformed herein results in total 13985 line km that covers approximately an area of 2797 km2.