Abstract: The growth rate of each face was determined by the crystallographic orientations of anionic coordinations such as [PO₄]^3- and [CaP₆O₂₄]¹⁶-
in phosphate crystals and the stability of their combining with octahedral [ClCa₆]¹¹⁺. According to the crystal habit of appearance for each face in
phosphorite, the crystallographic orientation should be paid a great attention to the growth of phosphorite for its application on artificial joints. The
phosphorite grown in direction parallel with the c-axis will promote the recovery of bones in the human body.

Key words: crystal structure, anionic coordination polygedron, crystallographic orientation, crystal habit