How to spot the gold
Including the gold metal is the first known human, and a person by the way there is in nature, and knew its value before the date listed in a time long! How discovered gold? The gold dealer in nature on a large scale in spite of its value and rarity, and the problem lies in the lack of availability in commercial quantities is always profitable. For example, containing sea water to a small amount of gold, but a very small amount that no one knows how to extract gold from the sea, and in spite of that, the amount of water in the oceans is so large may reach the amount of gold which about ten thousand million tonnes ! And there is gold in the two cases, is either pure or mixed with other metals in combination with other metal ores, and there is a natural gold (pure) or mildew in Arov quartz or quartz or in blocks of iron pyrites (iron Kbritor natural). And in some cases, he was iron pyrites or quartz to water or wind erosion, which led to the rocks surrounding the deposits of gold and to reveal Cdhirath or mass of almost pure. And drifting fragments or clusters gradually to valley bottoms, Vtkhalt sand and gravel, and then called gold in this case to "Almnbar" or "alluvial." Gold was discovered by the human for the first time, "Mnbara." The gold nuggets in the "Almnbarp" vary in size from powder to clean the large blocs has been found in Australia, such as the bloc "hello Dear Stranger" which has a weight of approximately seventy kilograms. Often Mayather gold ores in the other. The silver is almost always contain quantities of gold, and very often there is copper combined with gold. Today is obtained on gold mining in ways similar to the methods used to extract other metals, as they are digging a deep hole in the surface of the earth to mine gold, and this hole is called "tunnel." The depth of the tunnel miles or more, and is the uprooting of crude bombed, to be transported on carts to the tunnel where they will be lifted to the surface of the earth, and then crushed ore and grinding until it turns into grains of sand, and then separating the gold from other materials by chemical processing. The countries three main gold producer in the world are South Africa and Russia and the United States of America
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