![]() ![]() The Copperbelt in the Democratic Republic of the Congo (DRC) and Zambia yields most of the global cobalt production. The element is more usually produced as a by-product of copper and nickel mining. Today, some cobalt is produced specifically from one of a number of metallic-lustered ores, such as cobaltite (CoAsS). In 1735, such ores were found to be reducible to a new metal (the first discovered since ancient times), which was ultimately named for the kobold. They were so named because they were poor in known metals and gave off poisonous arsenic-containing fumes when smelted. Miners had long used the name kobold ore ( German for goblin ore) for some of the blue pigment-producing minerals. The color was long thought to be due to the metal bismuth. The free element, produced by reductive smelting, is a hard, lustrous, silvery metal.Ĭobalt-based blue pigments ( cobalt blue) have been used since antiquity for jewelry and paints, and to impart a distinctive blue tint to glass. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. Cobalt is a chemical element it has symbol Co and atomic number 27. ![]()
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