Zeta potential measurements of the fluorcarbonate mineral parisite-(Ce), under water, supernatant and collector conditions. Zeta potential measurements can be used to indicate the surface behaviour of a mineral under different reagent conditions. Mineral surface behaviour is important in processing and extracting minerals from their host ore, which can be energy intensive. Parisite-(Ce) is a fluorcarbonate mineral which contains rare earth elements. Rare earth elements are important in a wide range of products from iPhones to wind turbines.