Tellurium ore
The chemical symbol Te, atomic number 52, is a silver white shiny quasi metallic element. Belonging to Group 16 (oxygen group) in the periodic table, it usually exists in a hexagonal crystal form and has a metallic luster. The melting point is 449.8 ℃, the boiling point is 989.9 ℃, and the density is between 6.1 and 6.27 grams per cubic centimeter. The chemical properties are similar to antimony, but more stable and not easily oxidized by air. It mainly exists in the form of sulfide minerals in nature, such as chalcopyrite and tellurides. It is usually extracted as a by-product in the copper ore smelting process. The main uses include as semiconductor materials.
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