Gravity surveying at Skorovas Gruber
Quad Geometrics has carried out a gravity survey for Skorovas Gruber A/S (contact: Knut Berger, phone +47 941 46 010) in the autumn of 2024. This took place in the mountains of Trøndelag county, Norway, at the Skorovas mine. Nearly 6 million tons of sulphide ore were extracted, and copper, zinc and sulphur were exported before the mine was closed in 1984. The 2024 survey explored a larger area with high-precision microgravity technology for the first time. We used a CG-5 gravimeter and satellite positioning with CPOS correction giving cm-level accuracy. The terrain is best accessible by foot, and data acquisition was completed shortly before the winter arrived. We processed the gravity data with our internal software Attrack. This included terrain correction using a model with 1 m lateral resolution, which improves in an area with such rugged topography. Resulting maps were of high quality. The gravity data will form the basis for further exploration in the area. The search for minerals such as copper is picking up in Norway. High-resolution gravity imaging can be a powerful tool, as has been experiences elsewhere.
