Table 2.

Element composition in each type of urinary stone with different regions

Stone type/region	Calcium Oxalate	Calcium Phosphate	Uric Acid	Calcium Oxalate-Calcium Phosphate Mixed
Northern	C, O, Ca, Na,Cl,Mg,Al,P,Nb,Tc	C, O, Ca, P, Na,Mg,F,Cl,Nb,Tc,Hf,Cr	C, O, N, Ca	C, O, Ca, P, Na,Mg,K,F,Cl,Al,Nb
Eastern	C, O, Ca,Na,Cl,Mg,Al,P,K,Nb,Tc,Br	C, O, Ca, P, Na,Mg,K,Al,Cl,Nb,Tc,Hf	C, O, N,Na,Al,Cl,Ca	C, O, Ca, P, Na,Mg,K,F,Cl,Al,Nb,Tc,Hf,Fe
Central	C, O, Ca,Na,Al, Mg,P	C, O, Ca, P, Na,Mg,Nb	C, O, N,Ca	C, O, Ca, P, Na,Mg,F,Cl,Nb,Tc
Southern	C, O, Ca,Na,Cl,Mg,Al,P,K,F,Si,Nb,Tc,Hf,Zn	C, O, Ca, P, Na,Mg,Nb, Tc,Hf, Zn,F	C, O, N,Al,Ca	C, O, Ca, P, Na,Mg,F,Cl,Al,Nb,Tc,Hf,Zn
Southwest	C, O, Ca, Na,Cl,Mg,Al,P,K,Nb,Tc,Zn.S,Fe,Si	C, O, Ca, P, Na,Mg,K,F,Cl, Nb, Tc,Si	C, O, N,Al,Cl,Ca,Si	C, O, Ca, P, Na,Mg,F,Cl,Al,Nb, Tc,Si

The italics are the main elements of corresponding stone types