Consistent with this, on the DTA curve of the same sample, endothermic peaks from 760 to 895 °C confirm this situation.
Similar
results were obtained in thermal analyses performed using
various solids containing pure calcite (Hristova & Jancev
2003; Hojamberdiev et al. 2008). The total mass loss values
of the samples (Figure 7b) are corroborated by the loss on
ignition yielded by the chemical analysis (Table 2).