The Hinda Phosphate Ore-boby is hosted by Upper Cretaceous (Maastrichtian) Holle Series and younger sediments situated within Cretaceous to Quaternary terrestrial to marine succession of an intra-continental rift within the Congolese Coastal Basin.
A total of 929 diamond and reverse-circulation holes have been drilled by Cominco in the Hinda deposit, for 66,231 m.