What Are the Types of Gypsum Ore and Their Properties ...
2021-10-28 · Carbonate gypsum ore is gray, dark gray, granular, brecciated. Its main mineral is gypsum, containing dolomite, calcite and anhydrite. Anhydrite ore is dense and hard with the color of white, gray or light blue. The main minerals are anhydrite, gypsum (the sum of the two is greater than 85%), a small amount of montmorillonite, hydromica ...