Quartzite
Quartzite is a non-foliated metamorphic rock which started out as a sandstone with a high concentration of pure quartz. Quartzite is formed when these quartz rich sandstones are subjected to heat, pressure and are chemically metamorphosed into a much harder and durable material. The individual quartz grain recrystallize during the process and form an interlocking mosaic of quartz crystals. Physically, quartzite’s tend to be white to grey in colour but can also be coloured with pinks reds and purples by other minerals found in the material.
