TAILIEUCHUNG - Encyclopedia of Global Resources part 7

Encyclopedia of Global Resources part 7 provides a wide variety of perspectives on both traditional and more recent views of Earth's resources. It serves as a bridge connecting the domains of resource exploitation, environmentalism, geology, and biology, and it explains their interrelationships in terms that students and other nonspecialists can understand. The articles in this set are extremely diverse, with articles covering soil, fisheries, forests, aluminum, the Industrial Revolution, the . Department of the Interior, the hydrologic cycle, glass, and placer mineral deposits. . | 30 Aluminum Global Resources Metals on the History of Mankind. University Park Pennsylvania State University Press 1986. Shackelford James F. Introduction to Materials Science for Engineers. 7th ed. Upper Saddle River . Pearson Prentice Hall 2009. Simons Eric N. An Outline of Metallurgy. New York Hart 1969. Street Arthur and William Alexander. Metals in the Service of Man. 10th ed. London Penguin 1994. See also Aluminum Brass Bronze Cobalt Copper Manganese Metals and metallurgy Nickel Rare earth elements Steel. Aluminum Category Mineral and other nonliving resources Where Found Aluminum is the most abundant metallic element in the Earth s crust comprising percent of the mass in the crust by weight. As an element it is exceeded in crustal abundance only by oxygen and silicon. Commercially the most important aluminum ore is bauxite a mixed aluminum oxide hydroxide with a composition that varies with climate. Large reser ves of this mineral exist typically found in thick layers with little topsoil or overburden so that it can be easily mined. Worldwide reser ves are tremendously large notably in Australia Africa Brazil and countries in Central America. Primary Uses By far the main use of aluminum in its metallic form is as a structural material in the construction and transportation particularly aircraft industries. Another major use is as a container material of which the soft drink can is the most widely recognizable example. Aluminum is a more effective conductor per unit of mass than copper so it is a more versatile material for power lines. Electrical transmission lines thus account for a sizable fraction of total world production as well. Technical Definition Aluminum atomic number 13 is a member of the boron group Group III of the periodic table of the elements. In terms of chemical and physical proper ties the metallic element aluminum is more like boron than the other elements in the group. There is only one stable naturally occurring isotope of .

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