Barytes
(BaSO4)
Characteristics
- Density: 4.4 g/cm³
- Mohs‘ hardness: 3-3.5
- High radiation absorption
- Chemically inert
- Resistant to acid and base
Fluorite
(CaF2)
Characteristics
- Density: 3.2 g/cm³
- Mohs‘ hardness: 4
- Thermal conductivity: 9.7 W/mK
- Lubricating effect (solid lubricant)
- Fluxing agent