Petroleum

Oil (from the tour. Neft, from Persian. Oil [1]) - the natural oily flammable liquid consisting of a complex mixture of hydrocarbons and other organic compounds. In color, the oil is red-brown, sometimes almost black in color, although sometimes there and poorly painted in yellow-green color and even colorless oil, has a peculiar smell, common in sedimentary rocks of the Earth. Today, oil is one of the most important minerals for mankind.