2025-04-01https://repository.covenantuniversity.edu.ng/handle/123456789/40090This article consists the insitu data sets of activity concentrations of radio nuclides (K-40,Th-232andU-238) and gamma radiation dose rates measured about 1m above a kaolinitic terrain in Ifo-nyintedo,Dahomey Basin,SW Nigeria.Nineteen(19)data points were randomly occupied at the lower axis of the kaolin field using a hand-held detector known as Super-Spec(RS125).At each data point, the measurements were taken four times,while their averages and standard deviations were estimated in order to ensure accuracy.The radio metric survey was carried out between December,2017andJanuary,2018.The data sets were processed and analyzed via a descriptive statistics. The data can be explored further by estimating the radiological risks to the miners on the field, and to correlate the activity concentrations of the data with the activity concentrations of the tiles that are produced from the kaolin deposits in Ifonyintedo. Furthermore,the data from this article could be compared with other data acquired over a kaoli-nitic terrain across the globeapplication/pdfQ Science (General), QC PhysicsArticle