The geochemistry and diagnostic evaluation of Cretaceous-Tertiary kaolins in the Douala Sub-Basin in Cameroon were carried out in order to determine their potential industrial applications. The mineralogical, physical, physico-chemical and geochemical characteristics of the kaolins were determined. Quartz and kaolinite are the most dominant mineral phases in bulk kaolins (means of 45.25 and 33.90 wt%, respectively); whereas in the < 2 µm fraction, kaolinite is the most dominant mineral phase (mean of 72.17 wt%). The texture of half of the samples is sandy loamy clay or sandy loam texture, and the colour from white to light reddish brown. The moisture content is generally < 2 wt% in all the size fractions. The kaolins have an acidic pH, and the electrical conductivity is below 55 µS/cm. The major oxides geochemistry shows thatthe most abundant major oxides are silica and alumina, followed by iron oxide and titania. As physical, physico-chemical and geochemical characteristics of kaolins determine their potential industrial applications, these were inferred. Based on the interpretation of the results, the investigated kaolins could be used in the pharmaceutical, construction, pottery and cosmetics industries.
