Glasses in the system xFe(2)O(3)center dot(100 - x)[7GeO(2)center dot 3PbO] with 0 a parts per thousand currency sign x a parts per thousand currency sign 60 mol% have been prepared from melt quenching method. In this article, we investigated changes in germanium coordination number in iron-lead-germanate glasses through molar volume analysis, measurements of densities, investigations of FTIR, and UV-VIS spectroscopy. The observations present in these mechanisms show that the lead ions have an affinity pronounced toward [GeO5] and [FeO4] structural units with non-bridging oxygens. The excess of oxygen can be supported into the glass network by the formation of [FeO6] structural units and the apparition of the germanate anomaly. At higher content of iron (III) oxide, the anomaly behavior of the germanium is due to the formations of [FeO6] structural units. Our results show that the presence of fivefold germanium as a possible transitional phase from four to sixfold germanium it is necessary for the formation of the [FeO6] structural units and the apparition of the Fe2O3 crystalline phase. Pb+2 ions with 6s(2) configuration show strong absorption in the ultraviolet due to parity allowed s(2)-sp transition.