Composition (mole %)

Rapport Fe²⁺/Fe_T, % (±2)

Fe₂O₃ (mole %)

Fe₂O₃-40PbO-55P₂O₅

26

5

10Fe₂O₃-35PbO-55P₂O₅

21.57

10

15Fe₂O₃-30PbO-55P₂O₅

7.02

15

20Fe₂O₃-25PbO-55P₂O₅

6.67

20