Finely ground and dressed natural anhydrite is a waterless sulphate. It is often formed as an evaporation product from sea water. Anhydrite makes up the sturdy solid base of gypsum deposits and can be mined separately.
hardness 3.5 (Mohs)
density 3.0 g/cm³
high degree of whiteness
good transparent properties
Clear lacquer systems (among others UV wood varnishes)
industrial paints (e.g. corrosion protection, transparent lacquers)
construction chemicals (e.g. floor coverings, screed)