Abstract
Kilchoanite was synthesized hydrothermally by a new method from quartz-lime mixtures at lower temperatures. The method for hydrothermal treatment is different from that in common use and was employed in purpose to prevent the formation of intermediate phase. The starting mixtures were first heated to the desired temperature without added water and then carried out under hydrothermal conditions with a water compressor. In the case of the common method, the intermediate phase formed in heating process prevent the nucleation of kilchoanite at lower temperatures.
