Natural Products: A Minefield of Biomaterials

Table 1

Chemical composition of some calcium phosphates minerals.

Ca:P	Mineral name	Formula	Chemical use
1.0	Monetite	CaHPO4	Dicalcium phosphate (DCP)
1.0	Brushite	CaHPO4·2H2O	Dicalcium phosphate dihydrate (DCPD)
1.33	—	Ca8(HPO4)2(PO4)4·5H2O	Octacalcium phosphate (OCP)
1.43	Whitlockisite	Ca10(HPO4)(PO4)6	—
1.5	—	Ca3(PO4)2	Tricalcium phosphate (TCP)
1.67	Hydroxyapatite	Ca10(PO4)6(OH)2	—
2.0	—	Ca4P2O9	Tetracalcium phosphate