Abstract
Thermal transformation of inesite in air has been studied minutely in the temperature range up to 1200°C, using the differential thermal, thermogravimetric, chemical, and X-ray analyses. A correlation of thermal and chemical data with phase determinations shows that inesite pursues the reaction process shown as the following schema with increasing temperature, and transforms into bustamite with a small quantity of cristobalite at high temperature.
The most important reaction ruling this process is the dissociation-association reaction of chains of SiO4 tetrahedra in the structure.
