<p>Investigation of the mineral resources, such as bauxite, supports economic growth and infrastructure development for a country. Bauxite is an ore of aluminium. Aluminium is being used extensively from household to large industries, which further proves its rising demand. In terms of bauxite reserves of high-quality metallurgical grade, India holds approximately the fourth position in the world. However, most of the bauxite deposits are unexploited. Since bauxites are found at shallow depths in discontinuous and scattered forms, which makes bauxite exploration very challenging. So, for bauxite exploration, we must leverage this natural treasure through non-invasive geophysical techniques for cost-effective mining. Since drilling may not be an effective and efficient method for the exploration of bauxite boulders because it does not have direct geological/structural control. The present study focuses on the integrated geophysical exploration of bauxite ore. This study was carried out in Bimarla bauxite mine, Lohardaga, Jharkhand, using an integrated geophysical approach comprising magnetic, ground penetrating radar (GPR), multi-channel analysis of surface waves (MASW) and electrical resistivity tomography (ERT) methods. Low magnetic susceptibility was observed for bauxite-bearing ore. Ground penetrating radar (GPR) indicated interrupted EM waves for the anomalous features of compact bauxite boulders. Relatively high S-wave velocity was observed for the associated bauxite ores. Very high resistivity was observed for the bauxite-bearing ore bed. The integrated geophysical method proves its efficacy for the exploration of bauxite-bearing ore. All results are corroborated well with the visible bauxite boulder bed on the mine cut face.</p>

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Integrated Geophysical Approach for Bauxite Exploration in Bimarla Mine, Lohardaga, Jharkhand, India

  • Saurabh Srivastava,
  • Vivek Vikash,
  • Sanjit Kumar Pal,
  • Rajwardhan Kumar,
  • Sarvesh Kumar,
  • Subhendu Mondal,
  • Ajoy Kumar Bhaumik

摘要

Investigation of the mineral resources, such as bauxite, supports economic growth and infrastructure development for a country. Bauxite is an ore of aluminium. Aluminium is being used extensively from household to large industries, which further proves its rising demand. In terms of bauxite reserves of high-quality metallurgical grade, India holds approximately the fourth position in the world. However, most of the bauxite deposits are unexploited. Since bauxites are found at shallow depths in discontinuous and scattered forms, which makes bauxite exploration very challenging. So, for bauxite exploration, we must leverage this natural treasure through non-invasive geophysical techniques for cost-effective mining. Since drilling may not be an effective and efficient method for the exploration of bauxite boulders because it does not have direct geological/structural control. The present study focuses on the integrated geophysical exploration of bauxite ore. This study was carried out in Bimarla bauxite mine, Lohardaga, Jharkhand, using an integrated geophysical approach comprising magnetic, ground penetrating radar (GPR), multi-channel analysis of surface waves (MASW) and electrical resistivity tomography (ERT) methods. Low magnetic susceptibility was observed for bauxite-bearing ore. Ground penetrating radar (GPR) indicated interrupted EM waves for the anomalous features of compact bauxite boulders. Relatively high S-wave velocity was observed for the associated bauxite ores. Very high resistivity was observed for the bauxite-bearing ore bed. The integrated geophysical method proves its efficacy for the exploration of bauxite-bearing ore. All results are corroborated well with the visible bauxite boulder bed on the mine cut face.