Interpretasi Anomali Geomagnetik Daerah Rabau Hulu, Kalan

Uranium is used as the nuclear fuel. Increased demand for Uranium need to offset the increase in exploration. Geomagnetic method is one of gephysical methods that can be applied in the uranium deposits exploration that mineralization is associated with sulphide minerals. Processing, analysis, and interpretation of geomagnetic data was conducted in order to identify the distribution of uranium deposits in Rabau Hulu area, Kalan, West Kalimantan. Uranium deposits is generally associated with sulphides, tourmaline and contained in favourable rocks. Uranium mineralization encountered in other forms of irregular and uneven. Processing of the total magnetic field anomalies can be done to model the presence of sulphide minerals that fill the veins in the rocks. Two dimensional modeling using inversion software was conducted to determine the distribution and favorable zones based on local magnetic field anomalies data. Anomalies in the local magnetic field is concentrated on a zone of uranium deposits and occur in the fault zone. Uranium deposit zone is estimated to have magnetic susceptibility ≥ 10 in cgs unit.