A natural, variously colored calcium fluoride phosphate, Ca5F(PO4)3, with chlorine, hydroxyl, or carbonate sometimes replacing the fluoride. It is a source of phosphorus for plants and is used in the manufacture of fertilizers.

• 磷灰石一种自然的，多色的钙氟化物磷酸盐，Ca5F（PO4）3，其氟化物成分有时被氯，羟基或碳酸盐所取代。它是植物的一种磷肥并用来制造化肥