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A mineral is a natural, inorganic, solid, crystalline matter with a fixed chemical composition or that varies between very narrow limits. Scientifically the minerals are classified according to their chemical composition. Non-metallic minerals are those that do not serve to obtain metals. The main ones are the silicates, the carbonates, the sulphates, and the salts. Metal minerals are the ones who serve to get the metals, materials such as iron, gold, platinum, nickel, copper, aluminum, chromium, lead, and uranium. The properties of metallic minerals are the same in all minerals (metallic and non-metallic), including its hardness, brightness, color, conductivity, density, toughness, exfoliation and shape. Minerals provide humanity with the chemical elements that society needs for industry. For example iron, lead, fluorine, sulfur, etc. Metallic minerals are important in the modern world, since they represent the raw material for obtaining the metals. They generally do not form rocks and are found in small amounts, which creates the need to make mines to reach them. When they are extracted, they are usually united to fragments of rocks, where it is denominated ore to the mineral from which the metal is extracted and gangue to the accompanying rock. As we can see, minerals are important in all our activities, mainly as raw materials, representing an important potential to develop. However, getting them in bulk takes too much efforts, especially when you don't know any suppliers and producers of minerals. eWorldTrade helps you in such scenarios by providing you mineral & metals agents for your mineral and metal requirements. Our agents will bring the best mineral suppliers that are suitable to your needs.