Samples belonging to group five (V) have similar compositions
to the samples of group four, however in comparison to the latter,
small concentrations of barite is found. On average concentration
of barium is the highest among all analyzed samples and reaches
level 8.13–10.25%. In the samples where the XRD analysis proved
the presence of barite–Pb and/or barite–Sr decisively, concentration
of lead and strontium is very high 2.87–3.12%, and 3.33% relatively.
In the remaining samples within the group concentration
of lead and strontium is significantly lower (0.03–0.12%,) and
0.46–0.74%, relatively. It is likely that the diadochy of these elements
occurs in barite, however the degree of substitutions is
too low to be identified by XRD.