Mining Association Rules Applied to Goethite and Haematite Abundances in Manganese-Contaminated Soils
G-I. E. Ekosse1, N Forcheh2
More details
Hide details
1Mining and Minerals, School of Physical and Mineral Sciences, University of Limpopo, P/Bag X1106 Sovenga 0727, South Africa 2Department of statistics, University of Botswana, P/Bag 0022 Gaborone, Botswana
Pol. J. Environ. Stud. 2007;16(4):531–538
Mining association rules (MAR) are applied in elucidating on the abundances and association of Fe minerals in soils within the proximity of an abandoned manganese oxide (MnOx) mine. Four hundred soil samples were obtained from a 4 km2 area close to the abandoned mine in Kgwakgwe, Botswana. The Fe minerals in the soil samples were identified by x-ray diffractometry. Results depicted haematite and goethite present in different abundances: none, trace, minor and major in soils from the study area but only haematite in soils from the control site. From 16 possible combinations of the two Fe minerals in the soil samples, MAR results for confidence, certainty factor, lift and support, depicted haematite in major quantity to be the most influential. This fact is substantiated by its occurrence in the country shales.