Cristobalite
01 Description
Cristobalite
From whiteness to durability, Rawlynx cristobalite sands and powders bring a wide range of benefits as a specialist additive in engineered stone, coating and polymer applications.
02 About
01
Cristobalite
Rawlynx cristobalite is a high temperature polymorph of high purity quartz, produced at 1,500°C through calcination and iron-free grinding.
The calcination process changes the crystalline composition of the quartz, creating a more open ring structure of Si02 units. Our cristobalite sands and powders (brand name RAWLYNX®) offer one of the highest brightness levels of any mineral.
Cristobalite can be characterised by:
- high brightness
- relatively high Mohs hardness of 6.5
- relatively low refractive index
- easy wetting
- high inertness in various media
- transparency for UV-radiation