<unk>  is the name given to a family of minerals containing<unk>  ions (Ca2+) together with orthophosphates (PO43−), metaphosphates or pyrophosphates (P2O74−) and occasionally hydrogen or hydroxide ions[citation needed].<unk>  is the principal form of<unk>  found in bovine milk and blood. Seventy percent of bone consists of hydroxyapatite, a<unk>  mineral (known as bone mineral). Tooth enamel is composed of almost ninety percent hydroxyapatite.
Calcium phosphate
Phosphate
Aluminium phosphate
Phosphorous acid
Phosphonic acid
Sodium phosphates
Calcium oxalate
Potassium