Changes in Pervoural Quartzite Crystal Lattice on Heating from 25 to 600°C

Quartzite is a mountain igneous sedimentary rock formed by fusion of quartz sand with other minerals. The volume of its consumption is increases constantly. For this reason resolution of the problem of the feasibility of developing a new formation or a new site (lode) of an existing quartzite deposit depends directly on its properties. This is especially true for the use of quartzite in the metal industry where it is exposed to high temperature. As a rule studying properties of quartzite for water absorption, open porosity and apparent density is performed at room temperature. Macro and microstructures are studied before and after calcining at 1450°C using optical microscopes that make it possible to conduct X-ray phase analysis.