Cobalt vs Lima

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

The copper belt in the Democratic Republic of the Congo (DRC) and Zambia yields most of the global cobalt production. World production in 2016 was 116,000 metric tons (114,000 long tons; 128,000 short tons) (according to Natural Resources Canada), and the DRC alone accounted for more than 50%.Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt(II) aluminate (CoAl2O4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. Cobalt occurs naturally as only one stable isotope, cobalt-59. Cobalt-60 is a commercially important radioisotope, used as a radioactive tracer and for the production of high-energy gamma rays. Cobalt is the active center of a group of coenzymes called cobalamins. Vitamin B12, the best-known example of the type, is an essential vitamin for all animals. Cobalt in inorganic form is also a micronutrient for bacteria, algae, and fungi.

Source: Wikipedia

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Lima ( LEE-mə; Spanish pronunciation: [ˈlima]) is the capital and the largest city of Peru. It is located in the valleys of the Chillón, Rímac and Lurín rivers, in the central coastal part of the country, overlooking the Pacific Ocean. Together with the seaport of Callao, it forms a contiguous urban area known as the Lima Metropolitan Area. With a population of almost 9 million, Lima is the third largest city in the Americas, after São Paulo and Mexico City. Lima was named by natives in the agricultural region known by native Peruvians as Limaq. It became the capital and most important city in the Viceroyalty of Peru. Following the Peruvian War of Independence, it became the capital of the Republic of Peru (República del Perú). Around one-third of the national population lives in the metropolitan area. Lima is home to one of the oldest institutions of higher learning in the New World. The National University of San Marcos, founded on 12 May 1551, during the Viceroyalty of Peru, is the first officially established and the oldest continuously functioning university in the Americas.

Nowadays the city is considered to be the political, cultural, financial and commercial center of the country. Internationally, it is one of the thirty most populated urban agglomerations in the world. Due to its geostrategic importance, it has been defined as a "beta" city. Jurisdictionally, the metropolis extends mainly within the province of Lima and in a smaller portion, to the west, within the constitutional province of Callao, where the seaport and the Jorge Chávez airport are located. Both provinces have regional autonomy since 2002. In October 2013, Lima was chosen to host the 2019 Pan American Games; these games were held at venues in and around Lima, and were the largest sporting event ever hosted by the country. It also hosted the APEC Meetings of 2008 and 2016, the Annual Meetings of the International Monetary Fund and the World Bank Group in October 2015, the United Nations Climate Change Conference in December 2014, and the Miss Universe 1982 contest.

Source: Wikipedia