Klassifikation av leptiter i malmstråket mellan Ö. Silvberg och Vallberget, Dalarna
Ö. Silvberg och Vallberget are two sulphide-ore mines immediately to the west of the town Säter in Dalarna. They are found in a NE-SW trending orebearing zone in the Leptite-formation. An area extending about 6 km in the NE-SW and 2 km in the perpendicular direction has been mapped. It consists of different types of volcanics, which chemically correspond to rhyolites (Na-rich, K-rich and alkali-in
