Correlation between ore mineralogical composition at different depths and Bond Work Index for the Erdenetiin Ovoo Cu-Mo porphyry deposit, Mongolia

Authors

  • Batmunkh Tumen-Ayush Erdenet Mining Corporation SOE, Orkhon province, Erdenet 61027, Mongolia; Department of Mining Technology, School of Geology and Mining Engineering, Mongolian University of Science and Technology, Ulaanbaatar 14191, Mongolia https://orcid.org/0009-0003-3781-7604
  • Chinzorig Bavuu Department of Mining Technology, School of Geology and Mining Engineering, Mongolian University of Science and Technology, Ulaanbaatar 14191, Mongolia
  • Narangerel Adiyasuren Erdenet Mining Corporation SOE, Orkhon province, Erdenet 61027, Mongolia
  • Davaajargal Darambazar Center for Nanoscience and Nanotechnology, Department of Chemical and Biological Engineering, School of Engineering and Technology, National University of Mongolia, Ulaanbaatar 14201, Mongolia
  • Ganbileg Davaajav Center for Nanoscience and Nanotechnology, Department of Chemical and Biological Engineering, School of Engineering and Technology, National University of Mongolia, Ulaanbaatar 14201, Mongolia
  • Khaliun Amartuvshin Center for Nanoscience and Nanotechnology, Department of Chemical and Biological Engineering, School of Engineering and Technology, National University of Mongolia, Ulaanbaatar 14201, Mongolia
  • Sondor Ganbat Center for Nanoscience and Nanotechnology, Department of Chemical and Biological Engineering, School of Engineering and Technology, National University of Mongolia, Ulaanbaatar 14201, Mongolia
  • Tsend-Ayush Tserendagva Erdenet Mining Corporation SOE, Orkhon province, Erdenet 61027, Mongolia
  • Altankhuyag Dorjyunden Erdenet Mining Corporation SOE, Orkhon province, Erdenet 61027, Mongolia https://orcid.org/0000-0003-3993-1139
  • Ganzorig Chimed Center for Nanoscience and Nanotechnology, Department of Chemical and Biological Engineering, School of Engineering and Technology, National University of Mongolia, Ulaanbaatar 14201, Mongolia https://orcid.org/0000-0003-3807-7743

DOI:

https://doi.org/10.5564/mgs.v30i60.3583

Keywords:

ore hardness, estimation model, biotite granodiorite, granodiorite, mineralogy

Abstract

The Erdenetiin Ovoo Cu-Mo porphyry deposit in Mongolia is the largest copper mine corporation in the nation. In this study, we investigate the grinding properties of biotite granodiorite and granodiorite rock alteration relative to variations in mine depth, with a specific focus on their correlation with mineral composition. The Bond Work Index experimental tests are applied to the Cu-Mo porphyry ore from the Erdenet Mining Corporation in Mongolia. The samples used in this study were collected representing 10 composites of 5 different depth levels with an interval of ~90 m within the 1175-725 m sampling elevation. The chemical, surface analytical, and mineralogical characterizations of the two types of biotite granodiorite and granodiorite ores are performed using Inductively Coupled Plasma, X-ray fluorescence, and X-ray diffractometer methods. Results of the chemical analysis indicate that the Cu and Mo percentages of both biotite granodiorite and granodiorite consistently decreased with depth profiling. The X-ray diffractometer data of mineral composition are used in setting up the prediction of the Bond Work Index estimation model. An equation-based approach to the Bond Work Index estimation model demonstrates a strong linear correlation (R²=0.895) with the measured Bond Work Index from experimental tests, with the highest Bond Work Index measured at 19.06 kWh/t. Our experimental results indicate that strong correlations were identified between the major mineral phases and the Bond Work Index values through the integration of ore hardness and mineralogical data.

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Published

2025-03-25

How to Cite

Tumen-Ayush, B., Bavuu, C., Adiyasuren, N., Darambazar, D., Davaajav, G., Amartuvshin, K., … Chimed, G. (2025). Correlation between ore mineralogical composition at different depths and Bond Work Index for the Erdenetiin Ovoo Cu-Mo porphyry deposit, Mongolia. Mongolian Geoscientist, 30(60), 23–35. https://doi.org/10.5564/mgs.v30i60.3583

Issue

Vol. 30 No. 60 (2025)

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Copyright (c) 2025 Batmunkh Tumen-Ayush, Chinzorig Bavuu, Narangerel Adiyasuren, Davaajargal Darambazar, Ganbileg Davaajav, Khaliun Amartuvshin, Sondor Ganbat, Tsend-Ayush Tserendagva, Altankhuyag Dorjyunden, Ganzorig Chimed

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