Sphalerite, which is also known as Zinc Blende, is composed of Zinc Sulphide and is the principal ore of zinc. It is found in many places across the world, with the leading localities being sited in the United States, Australia, Italy, Spain, Myanmar, Peru, Morocco, Germany and England. It occurs in a number of different forms including massive, granular, botryoidal, fibrous, earthy, and concretions. It has a complicated series of crystal habits, and is often associated with the minerals calcite, chalcopyrite, fluorite, galena, magnetite, pyrite, pyrrhotite, and quartz, as well as many others. Specimens with a high luster (which is adamantine, resinous, sub-metallic, or earthy) and good crystal structures are popular with collectors.

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