Major oxides

Trace elements

REE

SiO₂ r ≥ −0.90

CaO

-

-

SiO₂ r > −0.70 - 0.90

P₂O₅

Be, U, Zr

-

Al₂O₃ r ≥ −0.90

CaO

-

-

Al₂O₃ r > −0.70 - 0.90

P₂O₅

Be, Zr

-

Fe₂O₃ r ≥ −0.90

-

-

-

Fe₂O₃ r > −0.70 - 0.90

-

-

-

CaO r ≥ −0.90

SiO₂, Al₂O₃, K₂O

Ta

-

CaO r > −0.70 - 0.90

TiO₂

Co, Ga, Nb, Rb, Cu

La, Ce, Pr, Nd

MgO r ≥ −0.90

-

-

-

MgO r > −0.70 - 0.90

-

-

-

Na₂O r ≥ −0.90

-

-

-

Na₂O r > −0.70 - 0.90

-

-

-

K₂O r ≥ −0.90

CaO

-

-

K₂O r > −0.70 - 0.90

P₂O₅

-

-

MnO r ≥ −0.90

-

-

-

MnO r > −0.70 - 0.90

-

-

-

TiO₂ r ≥ −0.90

-

-

-

TiO₂ r > −0.70 - 0.90

CaO, P₂O₅

-

-

P₂O₅ r ≥ −0.90

-

-

-

P₂O₅ r > −0.70 - 0.90

SiO₂, Al₂O₃, K₂O, TiO₂

Nb, Rb, Ta

-