Talc, or talcum, is a platy mineral, composed of hydrated magnesium silicate with the chemical formula Mg₃Si₄O₁₀(OH)₂. It is an ingredient in ceramics, paints, and roofing materials.
Calcite or limestone is ground calcium carbonate having a high composition of CaCo3 and very low silica with a very high reflective index.
Quartz is a chemical compound that constitutes one part of silicon and two parts of oxygen. It is silicon dioxide (SiO2). It is the most surplus mineral found on Earth's surface, and its unique properties make it one of the most useful natural substances.
Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO₃)₂. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite.
Feldspar is a large group of rock-forming silicate minerals that make up over 50% of Earth’s crust. They are found in igneous, metamorphic, and sedimentary rocks in all parts of the world.
Pyrophyllite is a phyllosilicate mineral formed of aluminum silicate hydroxide: Al2SiO10(OH)2. It occurs in two or less distinct varieties, namely, as crystalline folia and as compact masses; distinct crystals are not known.
Micronized and surface-treated sodium suphate anhydrous powder is a white inorganic sodium salt of suphuric acid Na₂SO₄.