2CA 3 (PO 4 ) 2 +6 SIO 2 + 10 C   T0 P 4 +6 CASIO 3 +10 CO 

30/2Ca 3 (PO 4 ) 2 +6 SiO 2 + 10 C   t

0

P 4 +6 CaSiO 3 +10 CO 