Phosphate Rocks: A Review of Sedimentary and Igneous Occurrences in Morocco
WEBOct 16, 2021 · Phosphate rocks are a vital resource for world food supply and security. They are the primary raw material for phosphoric acid and fertilizers used in agriculture, and are increasingly considered to be a potential source of rare earth elements. Phosphate rocks occur either as sedimentary deposits or igneous ores associated with alkaline .