This paper addresses the application of integrated chargeability and resistivity method and grade... more This paper addresses the application of integrated chargeability and resistivity method and grade data in modeling and evaluation of copper deposits. We argue that the relationship between IP, Rs and grade data may be used for modeling and reserve estimation and tested this argument for Sarbisheh copper deposit that is located in eastern Iran. Geology and mineralization situation of Sarbisheh deposit was reviewed. Then geophysical survey design was carried out based on the borehole exploration data and other parameters such as geological and topographical factors. Five profiles were designed and surveyed using dipole-dipole array. The obtained data was processed and 2D sections of IP and Rs were prepared for each profile by inverting the data using the Res2dinv software. Based on the geostatistical methods, a 3D block model for IP and Rs data was constructed using Datamine Studio software and this model was evaluated by some exploratory boreholes in the study area. The relationship ...
Madan Bozorg is an active copper mine located in NE Iran, which is a part of the very wide copper... more Madan Bozorg is an active copper mine located in NE Iran, which is a part of the very wide copper mineralization zone named Miami-Sabzevar copper belt. The main goal of this research work is the 3D model construction of the induced polarization (IP) and resistivity (Rs) data with quantifying the uncertainties using geostatistical methods and drilling. Four profiles were designed and surveyed using the CRSP array based on the boreholes. The data obtained was processed, 2D sections of IP and Rs were prepared for each profile by inverting the data, and these sections were evaluated by some exploratory boreholes in the studied area. Based on the geostatistical methods, 3D block models were constructed for the 2D IP and Rs data, and the uncertainties in the prepared models were obtained. The mineralization location was determined according to the geophysical detected anomalies. In order to check the models, some locations were proposed for drilling in the cases that the borehole data was...
This paper investigates the use of induced polarisation (IP) and resistivity methods to character... more This paper investigates the use of induced polarisation (IP) and resistivity methods to characterise bitumen deposits in western Iran. Specifically we explore the Barreh-palang bitumen deposit in Gilan-gharb, Kermanshah province, Iran. These deposits are mainly found in vertical structures and, in some cases, complicated fault and fracture structures. Additionally, the hydrogeophysical environment adds complexity due to elevated groundwater levels that are of moderate to high salinity. Both resistivity and IP data were recorded using a combined resistivity sounding and profiling (CRSP) array with potential electrode spacing of 5 m in four profiles. Several anomalous responses were detected. For several of these responses, the bitumen-rich zone was difficult to distinguish from other responses without the IP data, implying that resistivity alone is not always sufficient for detection of bitumen, especially in complex geological situations. Interestingly, we also show that the presenc...
This paper addresses the application of integrated chargeability and resistivity method and grade... more This paper addresses the application of integrated chargeability and resistivity method and grade data in modeling and evaluation of copper deposits. We argue that the relationship between IP, Rs and grade data may be used for modeling and reserve estimation and tested this argument for Sarbisheh copper deposit that is located in eastern Iran. Geology and mineralization situation of Sarbisheh deposit was reviewed. Then geophysical survey design was carried out based on the borehole exploration data and other parameters such as geological and topographical factors. Five profiles were designed and surveyed using dipole-dipole array. The obtained data was processed and 2D sections of IP and Rs were prepared for each profile by inverting the data using the Res2dinv software. Based on the geostatistical methods, a 3D block model for IP and Rs data was constructed using Datamine Studio software and this model was evaluated by some exploratory boreholes in the study area. The relationship ...
Madan Bozorg is an active copper mine located in NE Iran, which is a part of the very wide copper... more Madan Bozorg is an active copper mine located in NE Iran, which is a part of the very wide copper mineralization zone named Miami-Sabzevar copper belt. The main goal of this research work is the 3D model construction of the induced polarization (IP) and resistivity (Rs) data with quantifying the uncertainties using geostatistical methods and drilling. Four profiles were designed and surveyed using the CRSP array based on the boreholes. The data obtained was processed, 2D sections of IP and Rs were prepared for each profile by inverting the data, and these sections were evaluated by some exploratory boreholes in the studied area. Based on the geostatistical methods, 3D block models were constructed for the 2D IP and Rs data, and the uncertainties in the prepared models were obtained. The mineralization location was determined according to the geophysical detected anomalies. In order to check the models, some locations were proposed for drilling in the cases that the borehole data was...
This paper investigates the use of induced polarisation (IP) and resistivity methods to character... more This paper investigates the use of induced polarisation (IP) and resistivity methods to characterise bitumen deposits in western Iran. Specifically we explore the Barreh-palang bitumen deposit in Gilan-gharb, Kermanshah province, Iran. These deposits are mainly found in vertical structures and, in some cases, complicated fault and fracture structures. Additionally, the hydrogeophysical environment adds complexity due to elevated groundwater levels that are of moderate to high salinity. Both resistivity and IP data were recorded using a combined resistivity sounding and profiling (CRSP) array with potential electrode spacing of 5 m in four profiles. Several anomalous responses were detected. For several of these responses, the bitumen-rich zone was difficult to distinguish from other responses without the IP data, implying that resistivity alone is not always sufficient for detection of bitumen, especially in complex geological situations. Interestingly, we also show that the presenc...
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Papers by Kamran Mostafaei