Comparative Study of Local Mining Methods and Assay of Cassiterite with other Alluvial Mineral Deposits in Kuru-Jantar, Plateau State, Nigeria

D. V. Abere^1, , G. M. Oyatogun², A. A. Abioye³, A. L. Rominiyi⁴, O. P. Abioye³, U. Yaskuma¹, G. O. Onotu⁵, M. O. Ogar⁵, A. O. Oyatogun², M. T. Igbonwelundu¹, G. F. Filusi⁶ and I. E. Akinwole²

¹Department of Metal Processing and Production, National Metallurgical Development Centre, Jos, Nigeria

²Department of Materials Science and Engineering Obafemi Awolowo University, Ile Ife Nigeria

³Department of Mechanical Engineering, Covenant University, Ota, Nigeria

⁴Department of Research and Development, Prototype Engineering Development Institute, Ilesa, Nigeria

⁵Department of Mineral Processing, National Metallurgical Development Centre, Jos, Nigeria

⁶Department of Mechanical Engineering, University of Ado Ekiti, Nigeria

Cite this paper:
D. V. Abere, G. M. Oyatogun, A. A. Abioye, A. L. Rominiyi, O. P. Abioye, U. Yaskuma, G. O. Onotu, M. O. Ogar, A. O. Oyatogun, M. T. Igbonwelundu, G. F. Filusi and I. E. Akinwole. Comparative Study of Local Mining Methods and Assay of Cassiterite with other Alluvial Mineral Deposits in Kuru-Jantar, Plateau State, Nigeria. American Journal of Mining and Metallurgy. 2017; 4(1):51-61. doi: 10.12691/ajmm-4-1-5

Abstract

This research attempt to investigate and compare the local mining methods of cassiterite in Kuru-Jantar with the view to determine the mean recovery per day using statistical approach, separating the valuable minerals through the gravity and magnetic techniques, determine the grade of cassiterite (tin oxide) with the aid of volumetric and energy dispersive x-ray florescence (XRF) analyses; and determine the percentage composition of metals in cassiterite as well as its associate ores with the aid of (XRF). Sub-surface (lotto) and surface (Hand paddock) mining methods were carried out and the respective recovery from each of the method was subjected to processing, sampling and assaying to determine the quantity, quality (grade) and expected smelter-yield. The mean recoveries per day are 14.48 and 11.28 kg/day for lotto and paddock mining methods respectively. The burretting differential obtained for the lotto and paddock methods are 18.80 – 19.80 and 18.80 – 19.30 respectively while their respective percentage tin metal burretted are 90.40 – 97.83 and 92.51 – 97.80 %. The recoveries from the magnetic and gravity separations are 10.91 kg and 9.06 kg for lotto and paddock methods respectively. The XRF analysis gave 68.69 and 66.462 % Sn respectively for the lotto and paddock while the assaying of other associate minerals are 40.4 % Nb; 26.5 % Fe; 22.3 % Ti; 2.5 % Ta; 2.3 % Sn; and 5.1 % W for the paddock and 37.6 % Nb; 24.8 % Fe; 21.5 % Ti; 2.3% Ta; 5.8 % Sn; and 4.9 % W for lotto. It can be observed that the lotto mining method has the highest recovery per day and hence, gives better recovery than paddock mining method. Lotto mining was found to yield higher grade tin-ore concentrate than the hand paddock mining method in both volumetric and XRF analyses but hand paddock gives higher quantity and more associate minerals. It was also found out that the lotto method is more risky and life threatening than paddock mining while the paddock mining practices render more danger to environment than the lotto mining.

Keywords:
lotto paddock cassiterite columbite mining grade assay ore

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References:

[1]	Bradshaw, M. J. (2005). Population, Resources, Development and the Environment. In: Daniels, P. et al, eds. An Introduction to Human Geography: Issues for the 21st Century. 2nd ed. (Section 2).
[2]	Bridge, G. (2008). Economic Geography: Natural Resources. In: International Encyclopaedia of Human Geography. Eds. Kitchin and Thrift. Elsevier.
[3]	Gyang, J. D., Nanle, N., Chollom, S. G. (2010). An Overview of Mineral Resources Development in Nigeria: Problems and Prospects. Continental J. Sustainable Development, 1, 23-31.
[4]	Solomon, M. H. (2000). Growth and Diversification in Mineral Economies: Planning and Incentives for Diversification. South Africa: United Nations Centre for Trade and Development.
[5]	UNCTAD (United Nations Conference on Trade and Development), (2007). World Investment Report 2007: Transnational Corporations, Extractive Industries and Development. New York and Geneva: United Nations.
[6]	Okeke, C. N. (2008). The Second Scramble for Africa’s oil and Mineral Resources: Blessing or Curse? The International Lawyer, 42 (1), 193-210.
[7]	Mahtani, D. (2008). The New Scramble for Africa’s Resources. Financial Times Special Report, 28 Jan. 1-6.
[8]	Twerefou, D. K. (2009). Mineral Exploitation, Environmental Sustainability and Sustainable Development in EAC, SADC and ECOWAS Regions. African Trade and Policy Centre Work in Progress, 79. Economic Commission for Africa.
[9]	Morgan, P. G. (2002). Mineral title Management - the key to Attracting Foreign Mining Investment in Developing Countries? Trans. Instn Min. Metall. (Sect. B: Appl. earth sci.), B165-B170.
[10]	Girones, E. O., Pugachevsky, A. and Walser, G. (2009). Mineral Rights Cadastre: Promoting Transparent Access to Mineral Resources. Extractive Industries for Development Series #4 June 2009. Washington DC: The World Bank.
[11]	Obaje, N. (2009). Geology and Mineral Resources of Nigeria. London: Springer (Chapter 1).
[12]	Cowie, A. (2010): Tin, an Overlooked Commodity. The Market Oracle, Aug 19, 2010 http://www.MarketOracle.co.uk
[13]	Davenport, J. (2010). Nigeria Aiming to Grow Mining’s GDP Contribution to 15% by 2015. Mining Weekly, March 15, 2010.
[14]	Pastor, J. and Ogezi, A.E., 1986, New evidence of cassiterite bearing Precambrian basement rocks of the Jos Plateau, Nigeria – the Gurum case study, Mineralium Deposita, Vol. 21, No. 1, pp 81-83.
[15]	McAllister, M., Scoble, M. & Veiga, M. (2001). Mining with Communities. Nat. Res. Forum, 25, 191-202. Morgan, P. G. (2002). Mineral title Management - the key to Attracting Foreign Mining Investment in Developing Countries? Trans. Instn Min. Metall. (Sect. B: Appl. earth sci.), B165-B170.
[16]	Metallic Minerals, October2, 2010. http://www.onlinenigeria.com/minerals/?blurb=517.
[17]	Funtua, I.I., Idris, Y., Oyewale, A.O., Umar, I.M. and Elegba, S.B., 1997, Determination of Tin in cassiterite ores and tailings by 241Am source X- ray Flourescence Spectrometry, Appl. Radiat. Isot. Vol. 48. No.1, pp 103-104.
[18]	Evans, J.R. and Jackson, J.C., 1989, Determination of tin in silicate rocks by energy dispersive X-ray fluorescence spectrometry. X – Ray Spectrom. 18, pp 139.
[19]	Tin Investing News, September 30, 2010, Tin Advances on supply threats. http://tininvestingnews.com/483- tin-advances-on- supply-threats.html.
[20]	Abubakre, O.K., Sule, Y.O. and Muriana, R.A., 2009, Exploring the Potentials of tailings of Bukuru cassiterite Deposit for the Production of Iron ore Pellets, JMMCE, Vol. 8, No. 5, pp 359-366.
[21]	Xiaohui W., Shili Z., Hongbin X. and Yi Z., 2009, Leaching of niobium and tantalum from a low – grade ore using a KOH roast-water leach system, Hydrometallurgy, Vol. 98, Issues3-4, pp 219-223.
[22]	Ogwuegbu M., Onyedika G., Jiann-Yang H, Ayuk A., Peng Z, Li B., Ejike, E.N.O. and Matt A. (2011) Mineralogical Characterization of Kuru Cassiterite Ore by SEM-EDS, XRD and ICP Techniques. Journal of Minerals & Materials Characterization & Engineering, Vol. 10, No.9, pp.855-863, 2011.
[23]	Ofor O., 1992, Extraction of tin from cassiterite tailing by leaching – electrowinning process, Journal of Mining and Geology, Vol. 28, No. 1, pp 125-128.