The results obtained from the Mössbauer parameters of E-3 talc show that the IS and QS values were centered around 1.26 mm/s and 2.72 mm/s, respectively.
The IS and QS values of talc
and chlorite are in good agreement with values reported
earlier. Gonçalves et al. (1991) found that QS = 2.66 mm/s
and 1.15 mm/s corresponded to Fe+2 present in talc and
chlorite at room temperature. The high values of IS and
QS are thus characteristic of iron in the crystal structure
of talc and chlorite in our sample. Similar Fe2
O3
contents
obtained from chemical and EDX analyses of pure talc
sample (E-4) (Figures 4c–4f) also confirm the occurrence
of iron in the crystal structure of talc mineral