Investigating hydrothermal alteration associated with gold mineralization in Birnin-Gwari through tranformation of aero-radiometric data

Authors

  • Y. A. Bello Physics Department, Air Force Institute of Technology, Kaduna, Nigeria
  • S. C. Evans Physics Department, Air Force Institute of Technology, Kaduna, Nigeria
  • H. A. Lawal Physics Department, Air Force Institute of Technology, Kaduna, Nigeria
  • J. O. Alao Physics Department, Air Force Institute of Technology, Kaduna, Nigeria
  • D. Daramola Physics Department, Air Force Institute of Technology, Kaduna, Nigeria
  • T. O. Amuda Physics Department, Air Force Institute of Technology, Kaduna, Nigeria
  • M. B Yakubu Physics Department, Ahmadu Bello University Zaria, Nigeria
  • S. M. Hussaini Physics Department, Air Force Institute of Technology, Kaduna, Nigeria

Keywords:

hydrothermal alteration, Gold mining, Potassium deviation, F parameter

Abstract

Gold mining is a significant driver of wealth, serving as a reliable store of value against currency decline and a favoured hedge against inflation. Regions with hydrothermal alteration are key indicators of gold mineralization, and certain mapping techniques have proven effective for identifying these zones. However, these techniques have not yet been applied within the Birnin Gwari Schist Belt. This study used these established techniques to examine the spectrometric data over a known gold mine within the belt. The findings reveal that the gold mine area shows moderate potassium levels with low thorium and uranium readings, indicating hydrothermal alteration. Additionally, a region northwest of the mine may have undergone a similar alteration, suggesting a potential gold mine (PGM). The ternary map indicates the location of both the gold mine and PGM have high potassium concentrations. Both sites also record high Kd values, consistent with potassic alteration. The computed parameter value for the gold mine and PGM suggests their rock formations have undergone moderate alteration.

Dimensions

[1] D. R. McKay & D. A. Peters, “The midas touch: gold and its role in the global economy”, Plastic Surgery 25 (2017) 61. https://doi.org/10.1177/2292550317696049.

[2] I. Garba, “Geochemical characteristics of the gold mineralization near Tsohon Birnin Gwari, Northwestern Nigeria”, Geochemistry 62 (2002) 60. https://doi.org/10.1078/0009-2819-00008.

[3] I. A. Kankara & M. R. Darma, “A review of gold metallurgeny (metallogeny) in Nigeria”, International Journal of research in chemical, metallurgical and civil Eng. 3 (2016) 293. https://doi.org/10.15242/IJRCMCE.

[4] U. A. Danbatta, Y. I. Abubakar & A. A. Ibrahim, “Geochemistry of gold deposits in Anka schist belt, Northwestern, Nigeria”, Nigerian Journal of Chemical Research 13 (2008) 19. https://ajol.info/index.php/njcr/issue/view/8792.

[5] N. B. Salawu, J. O. Fatoba, L. S. Adebiyi, M. M. Orosun & S. S. Dada, “New insights on the Ife-Ilesha schist belt using integrated satellite, aeromagnetic and radiometric data”, Sci Rep 11 (2021) 15314. https://doi.org/10.1038/s41598-021-94813-1.

[6] N. Khalid Abdullahi, M. Sani Ahmad & A. Abubakar, “Application of electrical resistivity tomography technique for delineation of gold mineralization in Bugai town, Birnin Gwari, Kaduna, North Western Nigeria”, Environmental and Earth Sciences Research Journal 5 (2018) 29. https://doi.org/10.18280/eesrj.050105.

[7] A. A. Mohammed, A. U. Mohammed, O. Abdulganiu & D. A. Sadiq, “Geology of the structurally controlled quartz vein gold mineralization in the Dikko area, part of Zungeru—Minna—Birnin Gwari schist belt, NW Nigeria”, Journal of Geoscience and Environment Protection 09 (2021) 180. https://doi.org/10.4236/gep.2021.97012.

[8] O. O. Alabi & Y. E. Gbadamosi, “Investigating the potentials of sluice box angle of tilt on the beneficiation of Birnin-Gwari gold deposit”, FUOYE Journal of Engineering and Technology 6 (2021) 2. https://doi.org/10.46792/fuoyejet.v6i2.620.

[9] A. A. Akinlalu, “Radiometric Mapping for The Identification of Hydrothermally Altered Zones Related to Gold Mineralization in Ife–Ilesa Schist Belt, Southwestern Nigeria”, Indonesian Journal of Earth Sciences 3 (2023) A519. https://doi.org/10.52562/injoes.2023.519.

[10] H. Syaeful, “Radiometric signatures of gold mineralization zone in Pongkor, West Java, Indonesia: a baseline for radiometric mapping application on low-sulfidation epithermal deposit”, Resources, 13(2023) 2. https://doi.org/10.3390/resources13010002.

[11] Y. A. Bello, M. B. Yakubu & M. A. Bilal, “Delineating potential hydrocarbon targets through aeroradiometric techniques”, PHYSICS Access 4 (2024) 116. https://doi.org/10.47514/phyaccess.2024.4.2.014.

[12] S. H. Abd El Nabi, “Role of γ-ray spectrometry in detecting potassic alteration associated with Um Ba’anib granitic gneiss and metasediments, G. Meatiq area, Central Eastern Desert, Egypt”, Arabian Journal of Geosciences 6 (2013) 1249. https://doi.org/10.1007/s12517-011-0378-4.

[13] G. Erdi-Krausz, M. Matolin, B. Minty, J. P. Nicolet, W. S. Reford & E. M. Schetselaar, “Guidelines for radioelement mapping using gamma ray spectrometry data”, International Atomic Energy Agency (IAEA), 2003. [Online]. https://www.iaea.org/.

[14] T. F. P. de Quadros, J. C. Koppe, A. J. Strieder & J. F. C. L. Costa, “Gamma-ray data processing and integration for lode-Au deposits exploration”, Natural Resources Research 12 (2003) 57. https://doi.org/10.1023/A:1022608505873.

[15] N. Maden & E. Akaryal?, “Gamma ray spectrometry for recognition of hydrothermal alteration zones related to a low sulfidation epithermal gold mineralization (eastern Pontides, NE Türkiye)”, J Appl Geophy 122 (2015) 74. https://doi.org/10.1016/j.jappgeo.2015.09.003.

[16] M. Eleraki, B. Ghieth, N. Abd-El Rahman & S. Zamzam, “Hydrothermal zones detection using airborne magnetic and gamma ray spectrometric data of mafic/ultramafic rocks at Gabal El-Rubshi area, Central Eastern Desert (CED), Egypt”, Advances in Natural and Applied Sciences 11 (2017) 182. https://www.aensiweb.com/ANAS.

[17] D. F. Saunders, S. A. Terry & C. K. Thompson, “Test of national uranium resource evaluation gamma-rayspectral data in petroleum reconnaissance”, Geophysics 52 (1987) 1547. https://doi.org/10.1190/1.1442271.

[18] A. M. Silva, A. C. B. Pires, A. Mccafferty, R. A. V. de Moraes & H. Xia, “Application of airborne geophysical data to mineral exploration in the uneven exposed terrains of the Rio Das Velhas greenstone belt”, Brazilian Journal of Geology 33 (2003) 17. https://ppegeo.igc.usp.br/portal/wp-content/uploads/tainacan-items/15906/45048/9837-11496-1-SM.pdf.

[19] S. O. Sanusi & J. O. Amigun, “Structural and hydrothermal alteration mapping related to orogenic gold mineralization in part of Kushaka schist belt, North-central Nigeria, using airborne magnetic and gamma-ray spectrometry data”, SN Appl Sci 2 (2020) 1591. https://doi.org/10.1007/s42452-020-03435-1.

[20] A. A. Akinlalu, A. O. Adelusi, G. M. Olayanju, K. A. N. Adiat, G. O. Omosuyi, A. Y. B. Anifowose & B. E. Akeredolu, “Aeromagnetic mapping of basement structures and mineralisation characterisation of Ilesa Schist Belt, Southwestern Nigeria”, Journal of African Earth Sciences 138 (2018) 383. https://doi.org/10.1016/j.jafrearsci.2017.11.033.

[21] A. A. Akinlalu, G. M. Olayanju, K. A. N. Adiat & G. O. Omosuyi, “Mineralisation potential assessment using analytical hierarchy process (AHP) modeling technique: a case study of Ilesha schist belt, southwestern Nigeria”, Results in Geophysical Sciences 7 (2021) 100026. https://doi.org/10.1016/j.ringps.2021.100026.

[22] S. O. Elkhateeb & M. A. G. Abdellatif, “Delineation potential gold mineralization zones in a part of Central Eastern Desert, Egypt using airborne magnetic and radiometric data”, NRIAG Journal of Astronomy and Geophysics 7 (2018) 361. https://doi.org/10.1016/j.nrjag.2018.05.010.

[23] M. L. Airo, “Aeromagnetic and aeroradiometric response to hydrothermal alteration”, Surv Geophys 23 (2002) 273. https://doi.org/10.1023A:1015556614694.

Published

2025-03-14

How to Cite

Investigating hydrothermal alteration associated with gold mineralization in Birnin-Gwari through tranformation of aero-radiometric data. (2025). Proceedings of the Nigerian Society of Physical Sciences, 2(1), 171. https://doi.org/10.61298/pnspsc.2025.2.171

How to Cite

Investigating hydrothermal alteration associated with gold mineralization in Birnin-Gwari through tranformation of aero-radiometric data. (2025). Proceedings of the Nigerian Society of Physical Sciences, 2(1), 171. https://doi.org/10.61298/pnspsc.2025.2.171