The Gjedde Lake gold occurrence in Pasvik

Abstract

The Gjedde Lake gold occurrence was found in the Pasvik Valley during field work in the summer of 1993. The area is poorly exposed and this hampered the investigation. The gold mineralisation is related to the upper section of the Early Proterozoic Petsamo Supergroup. The host rocks are represented by cherty quartzites, considered as chemical sediments related to submarine exhalations. The gold mineralistion is assosiated with the sulphide facies of the cherty quartzites, while the oxidised magnetite-bearing sulphide-free rocks do not contain any gold. The highest gold content is ca. 10 ppm. Detailed mapping of discovery site outcrops and limited sampling have been done. Further investigations are recommended, including ground geophysical survey (IP) and mapping of boulders and outcrops within an area of 0.5 km\u00B2. Some trenching and core drilling are needed in this poorly exposed terrain.