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The Investigations of Ore and Tailing Samples for Improving Extracting Methods and Enhancing Gold Recovery of Artisanal and Small-Scale Miners: A Case Study of Singida Region in Tanzania, East Africa
Tekijät: Kalimenze, John Desderius; Mvile, Benatus Norbert
Kustantaja: Tanzania Geological Society (TGS)
Julkaisuvuosi: 2024
Journal: Journal of Mines and Geosciences
Vuosikerta: 1
Aloitussivu: 44
Lopetussivu: 74
ISSN: 3057-3483
Verkko-osoite: https://www.journal.tgs.or.tz/index.php/jmg/article/view/52
The Artisanal and Small-Scale Miners (ASSM) are engaged in gold mining activities across various regions in Tanzania, yet their production rates have been consistently subpar. This research aims to determine deficiencies in recovery techniques and the overall mineral extraction process, emphasizing the necessity of improving mineralized zone discovery and extraction methods through collaborative efforts among geologists, mining and mineral processing engineers, and ASSM. Leveraging geophysical and geological data, tailings, and ore studies using geostatistical software packages, this study evaluated mineralization in the Singida area to comprehend the mineralization controls and reasons for low gold metal recovery at different sites. Primary mineralization suites include As, Pb, and Sb, with Hg, Ag, and Te indicating potential pathfinders. The presence of Au-Cu-Zn polymetallic mineralization is evident. Structurally, the mineralization is predominantly governed by NE – SW first-generational structures and to some extent by NNW – SSE second-generational structures. The mineral extraction methodology targets Au recovery, yet it proves ineffective, as significant Au content remains in the tailings. This research highlights the necessity of conducting ore characterization and metallurgical tests before commencing mineral extraction processes, aiming to enhance processing and recovery methods, thus facilitating the efficient extraction of Au, Cu, and Zn in the Singida area to strengthen the economic prospects of ASSM and the country. This is a creditable practice worth emulating by other African countries to ASSM activities.