Silver element

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Silver is a transition metal with an atomic number of 47 that has been used throughout history for jewelry, money, and other applications due to its conductive and malleable properties. It is found naturally with gold and other minerals, has a melting point of 962°C, and while not very combustible, can change color when other chemicals are applied due to its reactivity.

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Gold is a transitional metal. In its purest form have reddish yellow color, soft, malleable, and ductile metal. Atomic number : 79 Atomic mass : 196.9 u Density : 19.32 g/cm3 Melting point : 1,064 °C Boiling point : 2,700 °C Founded in different form associated with different rock type in different tectonic setting. Discovered from earlier time and used for multi purposes. Formation of gold The saying among prospectors that "gold is where you find it" suggests its occurrence is unpredictable, but there is some certain geological environments for the formation. Because gold is very stable over a range of conditions, it is very widespread in the earth’s crust. Gold dissolved in warm to hot salty water, the fluids are generated in huge volumes deep in the Earth’s crust as water-bearing minerals dehydrate during metamorphism. Any gold present in the rocks being heated and squeezed is sweated out and goes into solution as complex ions. In this form, dissolved gold, along with other elements such as silicon, iron and sulphur, migrates wherever fractures in the rocks allow the fluids to pass. The direction is generally upwards, to cooler regions at lower pressures nearer the Earth’s surface. Gold eventually becomes insoluble and begins to crystallize, most often enveloped by quartz. The association of gold and quartz vein forms one of the most common types of "primary gold deposits". India In India, gold mineralization of economic importance is mainly restricted to Archean greenstone terranes of the Dharwar Craton (DC). The eastern block of the DC has a high favorability for hosting major gold deposits such as Kolar, Hutti, and Ramagiri, whereas the western block hosts only a few smaller deposits such as Gadag, Ajjahanahalli, and Kempinkote. Gold also discoverrd by GSI in the Singbhum Craton, Aravalli Craton, Bastar Craton and Southern Granulite Terrain (SGT). India is the second-largest consumer of gold after China. India currently holds about 558 tones of gold, representing 6.6% of its reserves, (World Gold Council, October 2016). Kolar Gold Field, Hutti Gold Field and Ramgiri Gold Field are the most important gold fields. Gold Demand and Use The largest source of demand is the jewelry industry Gold’s workability, unique beauty, and universal appeal make this rare precious metal the favorite of jewelers all over the world. Besides jewelry, gold has many applications in a variety of industries including aerospace, medicine, dentistry, and electronics for the manufacture of computers, telephones, televisions... The third source of gold demand is governments and central banks that buy gold to increase their official reserves. Private investors there are private investors. Depending upon market circumstances, the investment component of demand can vary substantially from year to year.

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