Determination of the limit of oxidation in zones of sub-outcropping Chipanga Coal Seam, Moatize Coal Basin, Mozambique

The study shows a direct relationship between the depth of the Chipanga seam and its degree of oxidation, shown by the sudden decrease of the CSI when the coal seam approaches the surface. The sudden change of CSI generally occurs at a depth of ca. 10 m, with small variations around this value. Therefore it can be said that the depth of the Limit of Oxidation (LOX) is 10 m.