Carbonate and silicate of iron as well as FeO in the minerals containing Fe also would be dissolved with leaching of MgO. Pyrrhotite (FeS) would be dissolved partly, but pyrite (FeS2) and iron oxide (FezOs) could not be dissolved with leaching of MgO.

• 含铁矿物中，铁的碳酸盐、硅酸盐、FeO等也将与MgO同时被浸出，磁黄铁矿(FeS)将部分被浸出，而Fe_2O_3、黄铁矿(FeS_2)则不会被浸出。