Investigation of Iron Mineralization in Sourk Mineral Area Based on Geophysical Magnetic and Radiometric data
Keywords:
Geophysics, Sourk, Iron Skarn, Magnetometry, RadiometryAbstract
The study area is located in the west of Yazd province, a part of the structural zone of Central Iran, adjacent to the Urumieh-Dokhtar magmatic arc and in the Dehshir fault zone. The rocks of this area include sandstone, limestone, ophiolite rocks, Eocene volcanic units and granodiorite and granitoid intrusions. The minerals that make up Sourk iron ore are magnetite and hematite, which are associated with minor minerals such as pyrite and epidote. In this study, airborne geophysical survey including magnetic and radiometric data and surface geophysical survey have been used to identify the exact anomaly location and approximate estimation of mineralization depth by Euler method and residual magnetic map. According to the airborne geophysical survey, an anomaly corresponding to the intrusion mass in the area was identified and based on the analysis of data with airborne and surface geophysical methods and its adaptation to the results of exploratory drillings, while identifying anomalous blocks, it was determined that these anomalies are separate lenses with different dimensions at depth of about 180 meters in form of several separate layers, and are covered by interlayers of skarn units.
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