scholarly journals Diagnostics of Environmental Risks and Mapping of Surface Water Sensitivity Due to Metal Contamination from Artisanal Gold Mining in Côte d’Ivoire: Case of Angovia, Kokumbo, Hireand Agbaou

2020 ◽  
Vol 08 (02) ◽  
pp. 47-64
Author(s):  
Akpo Kouakou Sylvain ◽  
Koné Tiangoua ◽  
Coulibaly Sandotin Lassina ◽  
Mahamadou Kamagate ◽  
Coulibaly Lacina
Keyword(s):  
Surface Water ◽  
Metal Contamination ◽  
Gold Mining ◽  
Environmental Risks ◽  
Water Sensitivity ◽  
Artisanal Gold Mining

Artisanal Gold Mining and Surface Water Pollution in Ghana: Have the Foreign Invaders Come to Stay?

2013 ◽  
Vol 6 (3) ◽  
pp. 94-102 ◽  
Author(s):  
Frederick Ato Armah ◽  
Isaac N. Luginaah ◽  
Joseph Taabazuing ◽  
Justice O. Odoi
Keyword(s):  
Water Pollution ◽  
Surface Water ◽  
Gold Mining ◽  
Surface Water Pollution ◽  
Artisanal Gold Mining

scholarly journals The impact of artisanal gold mining, ore processing and mineralization on water quality in Marmato, Colombia

2021 ◽  
Author(s):  
Keith W. Torrance ◽  
Stewart D. Redwood ◽  
Alessandro Cecchi
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Gold Mining ◽  
World Health ◽  
Geochemical Data ◽  
Small Scale ◽  
Artisanal Mining ◽  
Artisanal Gold Mining ◽  
Ore Processing ◽  
The Impact

AbstractMarmato, Colombia, has been an important centre of gold mining since before the first Spanish colonizers arrived in 1536. The Marmato deposit is hosted in a dacite and andesite porphyry stock as sheeted sulphide-rich veinlet systems. The district is currently experiencing a surge in both major mining projects and artisanal mining, driven by sustained high gold prices. Ore from small-scale and artisanal gold mining is processed in numerous small mills (entables) around Marmato, which impact surface water quality through the discharge of milled waste rock slurry, highly alkaline cyanide-treated effluent, and high dissolved metal loads. To investigate the impact of artisanal mining and ore processing, water samples were collected in January 2012 from streams around Marmato. The average dissolved metal concentrations in impacted streams were Zn, 78 mg L−1; Pb, 0.43 mg L−1; Cu, 403 µg L−1 Cd, 255 µg L−1; As, 235 µg L−1; Ni, 67 µg L−1; Co, 55 µg L−1; Sb, 7 µg L−1; and Hg, 42 ng L−1, exceeding World Health Organization drinking water guidelines. In addition, arsenic speciation was conducted in-situ and indicated that 91–95% of inorganic arsenic species is in the form of As(V). Spatial analysis of the data suggests that entables processing ore for artisanal miners are the main contributor to water pollution, with high sediment loads, alkalinity and elevated concentrations of dissolved arsenic, cadmium, mercury and lead, caused by the processing of gold-bearing sulphides in the entables. Geochemical data from surface water were compared to a comprehensive data set of whole rock analyses from drill core and channel samples from the deposit, indicating that the deposit is significantly enriched in gold, silver, lead, zinc, arsenic, antimony, and cadmium compared to crustal averages, which is reflected in the surface water geochemistry. However, elevated mercury levels in surface water cannot be explained by enrichment of mercury in the deposit and strongly suggest that mercury is being added to concentrates during ore processing to amalgamate fine gold.

Leaching Gold with Cassava: An Option to Eliminate Mercury Use in Artisanal Gold Mining

2021 ◽  
pp. 127531
Author(s):  
P. Torkaman ◽  
M.M. Veiga ◽  
L.R.P. de Andrade Lima ◽  
L.A. Oliveira ◽  
J.S. Motta ◽  
...  
Keyword(s):  
Gold Mining ◽  
Artisanal Gold Mining

A Study on Ivory Coast with the Impacts of Artisanal Gold Mining on Local Livelihoods and the Mining Industry

2017 ◽  
Vol 20 ◽  
pp. 68-77
Author(s):  
Kouame Joseph Arthur Kouame ◽  
Fu Xing Jiang ◽  
Yu Feng ◽  
Si Tao Zhu
Keyword(s):  
Ivory Coast ◽  
Gold Mining ◽  
Mining Industry ◽  
Mineral Resources ◽  
Barriers To Entry ◽  
Chemical Contaminants ◽  
Artisanal Mining ◽  
Local Livelihoods ◽  
Artisanal Gold Mining ◽  
Main Activity

In rural regions, mining is an activity that employs many people due to the fact that the barriers to entry are sometime trivial, with very low technology, capital fund and no specialized skills required. Many people including children into artisanal mining in Ivory Coast because they can earn higher incomes in mining than through other traditional activities such as agriculture, which is the main activity in the country. Artisanal mining contribute to reduce the abject poverty and it offers many others opportunities. However, this activity has many negative social impacts. Local people including miners are risking their life everyday due to the unsanitary conditions, prostitution, chemical contaminants, and alcoholism, and also the large degradation of lands. The main objective of this Paper is to understand how artisanal gold mining in the Ivory Coast affects local livelihoods and the environment. Some key recommendations for addressing artisanal mining activities in order to have a good option for sustainable management of mineral resources in the country are proposed.

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