0.5 40 m W.Machu 0.1 1.0 5 6 1 1 hopeite,Zn3(PO4) 4H2O phosphophyllite Zn2Fe(PO4) 4H2O (P) (P) P (H) P P 2 2 1960 1 1 Ni Mn 1980 Mn Zn Ni Ni++ Ni 4 ZnO 1980 6 2 2 3 3
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