These *.CSV files contain FTIR spectra of the annabergite-erythrite solid solution. The proportions of Co and Mg are specified in the name of each file. These proportions are nominal and refer to the metal ratios in the starting solutions, not the actual composition of the samples!!!!

For the actual composition of the samples, see Table 2 of the publication Thermodynamics of vivianite-group arsenates M3(AsO4)2·8H2O (M = Ni, Co, Mg, Zn, Cu) and chemical variability of the natural arsenates of this group by Majzlan et al. There, you will find the nominal composition (included in the names of the file names stored here) and the real composition of the samples based on ICP-OES analyses.