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rhemil rechard
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Rahul Valia
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Buzzinga Brasil
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Gold And Silver: The Two Precious Traditional Coinage Metals
Author : Greg Matthews
4 transition metals frame group eleven of periodic table of elements. Each, except for one, are measured traditional coinage metals. Qualifying this further, only 2 of these 3 traditional coinage metals were measured precious metals. These are gold plus silver.
Gold plus silver are rare and possess high economic values. These items cannot be told of copper, another traditional coinage metal. Occurring in nature in metallic type, these two precious metals might be formed sans the usage of extraction metallurgy. These additional characteristics of gold plus silver made them equally well matched for coinage:
• They are not radioactive.
• They're more flexible or softer when compared to most other elements.
• They may be low reactive as compared with other elements.
• They've got tremendous luster.
• They have top melting points as compared with other metals.
The high-ductility characteristics of gold and silver means they might be easily spoiled as coins for circulation. Coins intended for circulation should be highly resistant to decay and wear. Because of this, gold or silver needs to be alloyed with other metals (e . g ., manganese) hence the resulting coins will come out harder, more wear-resistant, and not easily damaged or deformed.
From the numismatic items, gold plus silver coins are made almost totally of the precious metals, correspondingly. Recent collectible gold coins (the 22-carat gold coins), for example, are made from ninety two% gold, among silver plus copper comprising the rest. The coins in distribution in U S before 1933 were made of ninety % gold and 10% copper-silver combined. Canada's official gold bullion coin - The Canadian Gold Maple Leaf - is made of 99.999% gold; and thus are these four other gold bullion coins:
1. British Britannia (which includes a face value of hundred pounds).
2. Chinese Gold Panda (with face values of five hundred, two hundred, hundred, fifty, plus 25 Yuan).
3. Swiss Helvetia Head (with face values of hundred, 20, and ten Swiss francs).
4. Austrian Vienna Philharmonic (with face values of 100, 50, twenty five, plus 10 euros).
Silver coins, like the minted coins distributed in United States also other countries prior to 1965, were made from ninety % silver plus 10% copper. The American Silver Eagle and also Mexican Silver Libertad bullion coins, introduced in 1986 and 1982 correspondingly, have been made from 99.9% silver plus 0.1% copper.
Other notable silver bullion coins consist of the Australian Silver Kookaburra, Chinese Silver Panda, plus the Russian George the Victorious.
Minting coins, when gold or else silver, always entails the risk of getting value of metal used in the coin greater than the coin's face value. This is very true in coins of low value. For this reason, there exists the possibility of some smelters taking gold or silver coins plus melting these down for that scrap value of precious metals.
A few examples, with this regard, were worth mentioning here: US pennies are made from copper-clad zinc from 1982, if they were earlier this time made of copper alloys; and British pennies were one time made of 97% copper, but are now made of copper-plated steel.
As other information, gold plus silver both have currency code of ISO 4217.
Author's Resource Box
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Article Source:
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Tags: precious metals, coinage metal, extraction metallurgy, gold, silver, radioactive, The Canadian Gold Maple Leaf, British Britannia, Chinese Gold Panda, Swiss Helvetia Head, Austrian Vienna Philharmonic, American Silver Eagle, Mexican Silver Libertad, bul
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Submitted : 2010-08-02 Word Count : 644 Popularity: 58 Times Viewed: 7
