Silver is a lightgrey-white metal that is normally soft. The mining of silver began some 5000 years ago, with the first min being in Anatolia (modern-day Turkey). The principal sources of silver are the ores of silver, silver-nickel, lead, and lead-zinc obtained from Peru. Bolivia, Mexico, China, Australia, Chile, Poland, and Serbia. Peru, Bolivia, and Mexico have been mining silver since 1546, and are still major world producers. Just over half of the mined silver comes from Mexico, Peru, China, and Australia, the four largest producing countries. Primary mines produce about one-third of the world silver, while around two-thirds come as a by-product of gold, copper, lead and zinc mining. The top three silver – producing mine are Cannington (Australia), Fresnillo (Mexco), and San Cristobal (Bolivia). In Central Asia, Tajikstan is known to have some of the largest silver deposits in world. At the highest level, though, demand for silver breaks down into three important categories: silver in industry, investment and silver jewellery and decor. Together, these three areas represent more then 95% of the annual silver demand. With unique properties, including its strength, malleability, associate degreed ductility; its electrical and thermal conductivity; its sensitivity to and high coefficient of light; and the ability to endure extreme temperature; it is an component while not substitution. Commercial- grade fine silver is a minimum of ninety nine.9% pure, and purities bigger than ninety nine.999% square measure accessible.
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