Investigation of Cd contents in several phosphate rocks used for the production of fertilizer

► Investigation of PR on Cd conc. was needed to consider phosphate fertilizer source. ► Cd conc. in several PRs was compared under this study and other studies. ► PR4 exhibited the highest Cd conc. than those of the literature so far published. ► Main peak mineral of PR samples was found to be F, HA and CFA. ► Higher Cd content and prominent mineral of CFA in PR3 and PR4 were demonstrated.