The average cost of calcium phosphate per pound is $0.39-0.97. It is the main form of calcium found in milk. Hydroxyapatite is a calcium phosphate mineral which is largely found in bones and tooth enamel. It is used in the manufacture of phosphoric acid and fertilizers. It is an ingredient of many cheese products and is also used in baking as a raising agent. It is used in various dental products. In medications, it is used as a diluent.