Bauxite stone is a type of sedimentary rock that contains a high amount of aluminium. It has a low hardness, a dull luster, a reddish-brown color, and a low specific gravity. It consists mostly of the aluminium minerals gibbsite, boehmite, and diaspore, mixed with iron oxides, clay minerals, and other impurities.
Celestine or Celestite (SrSO4) is a mineral conforming to strontium sulfate. Regularly, Celestine is tintless, but colorful contamination unfolds this crystalized mineral with the shade of soft blue, white, light red, green, or brown. We can find Celestine as one of the richest sources of strontium.
Limestone is a type of sedimentary rock that is mainly composed of calcium carbonate (CaCO3), usually in the form of calcite or aragonite. It is formed when calcium carbonate minerals precipitate out of water that contains dissolved calcium. This can happen through both biological and nonbiological processes.
Iron concentrate is a type of iron ore that has been processed to remove impurities and increase Iron content. It is made up of minute, dry particles of pure Iron. Iron concentrate is useful in applications where high surface areas are desired, such as water treatment and fuel cell and solar applications. Iron concentrate is also used to produce steel and other iron-based products.
A type of iron oxide mineral with the chemical formula Fe2O3. Hematite is one of the most important ores of iron. Hematite has an extremely variable appearance. Its luster can range from earthy to submetallic to metallic. Its color ranges include red to brown and black to gray to silver. It occurs in many forms. However, hematite has a range of colors, massive crystals can have a brownish-red color.
Zinc is a chemical element with the symbol (Zn) and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. This means that zinc can break easily if bent or twisted, and it has a metallic luster that is visible when the surface layer of zinc oxide is removed by scraping or polishing. Zinc oxide forms when zinc reacts with oxygen in the air, and it protects the metal from further corrosion.
