Building materials are a natural resource that humankind has used since time immemorial to improve living conditions. The origin of these materials, as well as their chemical composition, compels us to examine their radiological characteristics in a city with a high concentration of radioactive minerals such as uranium and its decay products. To address radiation problems in homes and buildings in the city of Kolwezi, given that a large portion of these materials originates from artisanal mining sites or industrial waste, this study aims to be educational by providing insights into the various radiological characteristics of the quarry known as the Kananga-East deposit. The study encompasses an assessment of radioactivity (dose rate) and the analysis, using X-ray fluorescence spectrometry (XRF), of 50 samples from the different formations observed in the quarry. The results indicate that 97% of the samples have a gamma index (Ig) < 1, suggesting a low contribution to ambient natural radioactivity. However, two samples (HKK23 and JK17) slightly exceed the threshold of 1, requiring particular vigilance. The article concludes that the materials from Kananga-East do not constitute a significant radiological hazard for end users, but recommends careful management of atypical areas.