On the average (considering the consistent rise in the exchange rate of gold), the value of gold is around USD12 per gram. Here, it is clear that the currency value assigned by the government to a gold bullion coin has no meaning. Below is a list of some of the government-issued gold and silver bullion coins: 1. The estimated total resource from these eight countries is 6,000 tonnes (6 million kilograms). The United States alone, on the other hand, has an estimated total resource of 5,000 tonnes (5 million kilograms). These are identified in the states of Arizona, Miami, and Utah. But in spite of these significant resources, the U. Platinum: Most Widely Traded Of The Platinum Group Metals In the periodic table of the chemical elements, six metallic elements - all transition metals - are clustered together and lie in the d-block (the d-block in the periodic table refers to groups 8, 9, and 10, periods 5 and 6). These six elements are collectively referred to as the platinum group metals. So that while the chemical element tellurium is considered one of the rarest element in the Earth's crust (its mass abundance being the same as that of rhodium, iridium, and ruthenium), its estimated price is only less than 5 U.S. dollars per troy ounce, and, therefore, cannot be considered a precious metal. Medicine (silver compounds and silver ions have toxic effect on some viruses, fungi and bacteria, but not on humans). 10. Currency or coinage (as in silver bullion). The principal sources of silver are copper, lead, zinc and gold ores. It also occurs in the minerals chlorargyrite and argentite. Of course, silver occurs natively, too. Canada's official gold bullion coin - The Canadian Gold Maple Leaf - is made of 99.999% gold; and so are these four other gold bullion coins: 1. British Britannia (with a face value of 100 pounds). 2. Chinese Gold Panda (with face values of 500, 200, 100, 50, and 25 Yuan). 3. Swiss Helvetia Head (with face values of 100, 20, and 10 Swiss francs).
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