A study on inverse modelling of magnetic data for Korkora 1, Shahrak iron mine in Kurdistan province

Geophysical survey is one of the most important steps of exploration that must be conducted before exploration drilling ; Geophysical methods are different based on the physical properties of minerals and geological conditions. This study reports on Korkora, a section of Shahrak Iron mine located in the North East of Kurdistan Province and 60 km East of Takab. The geophysical study in the form of magnetic method was carried out in this area to investigate the mineralization. The total magnetic field intensity map was prepared after making the necessary corrections on the collected data. Having calculated the background magnetic field intensity and applying it to the raw data, the residual magnetic field map was drawn. Then, the vertical second derivative, upward to different heights, reduction to pole and analytical signal filters are performed on the data and the results were plotted and discussed on various maps. Then by designing a number of profiles on anomalies, inverse modeling by mag2dc software is done on these profiles. Euler method was used to determine the depth and shape ratio of deposit formation. Finally, by combining all the information obtained and by filtering the data, a number of points were proposed as prospectus points for exploration drilling. The drilling locations were selected so that they would satisfy the maximum chance of being within the ore body deposit.