Review of Short Phrases and Links|
This Review contains major "Gold"- related terms, short phrases and links grouped together in the form of Encyclopedia article.
- Gold is a heavy, yellow, metallic chemical element.
- Gold is the most malleable and ductile of metals.
- Gold is used as a monetary standard for many nations and is also used in jewelry, dentistry, and in electronics.
- Gold - All the details on world gold bullion, silver and platinum 2000 bullion coins.
- Gold is one of the world's most precious metals.
- Gold - A bright yellow metallic element used from the earliest days of coin production through to the present.
- Gold was at a high price in Egypt until they came in that year.
- Gold was for centuries used directly as currency along with silver.
- Gold is a highly sought-after precious metal that for many centuries has been used as money, a store of value and in jewelry.
- Gold is the most malleable and ductile metal; a single gram can be beaten into a sheet of one square meter, or an ounce into 300 square feet.
- The Canadian Gold Maple Leaf coin contains the highest purity gold of any popular bullion coin, at 99.999% (.99999 fine).
- White gold alloys can be made with palladium or nickel.
- High-carat white gold alloys are far more resistant to corrosion than are either pure silver or sterling silver.
- Nickel is toxic, however, and its release from nickel white gold is controlled by legislation in Europe.
- Palladium is used extensively in jewelry-making in certain alloys called "white gold." It may be alloyed with platinum or substituted for it.
- Platinum is extremely long wearing and is very white, so it does not need to be rhodium plated like white gold does.
- Fourteen carat gold-copper alloy is nearly identical in color to certain bronze alloys, and both may be used to produce police and other badges.
- Fourteen and eighteen carat gold alloys with silver alone appear greenish-yellow and are referred to as green gold.
- Eighteen carat gold containing 25% copper is found in antique and Russian jewelry and has a distinct, though not dominant, copper cast, creating rose gold.
- The currency he proposed was called the islamic gold dinar and it was defined as 4.25 grams of 24 carat (100%) gold.
- The primary source of gold is usually igneous rocks or surface concentrations.
- Central banks still hold historical gold reserves as a store of value although the level has generally been declining.
- As part of this system, governments and central banks attempted to control the price of gold by setting values at which they would exchange it for currency.
- Pure gold has a bright yellow color traditionally considered attractive.
- Pure gold is too soft for ordinary use and is hardened by alloying with silver, copper, and other metals.
- There are also some expensive (~$1000) cocktails which contain flakes of gold leaf.
- Blue gold can be made by alloying with iron and purple gold can be made by alloying with aluminum, although rarely done except in specialized jewelry.
- Pure gold is too soft for ordinary use and is typically hardened by alloying with copper or other base metals.
- Mines in South Dakota and Nevada supply two-thirds of gold used in the United States.
- The world's oceans hold a vast amount of gold, but in very low concentrations (perhaps 1-2 parts per billion).
- Since the 1880s South Africa has been the source for a large proportion of the world's gold supply.
- In various countries, gold is used as a standard for monetary exchange, in coinage and in jewelry.
- However, such attempts generally failed, and continued the general pressure towards a gold standard.
- Chemically, gold is a trivalent and univalent transition metal.
- The added metal is oxidized and dissolves allowing the gold to be displaced from solution and be recovered as a solid precipitate.
- Gold dissolves in mercury, forming amalgam alloys, but does not react with it.
- Gold forms both aurous (univalent) and auric (trivalent) compounds; auric chloride and chloroauric acid are its most common compounds.
- Like other precious metals, gold is measured by troy weight and by grams.
- China has produced coins in very limited quantities (less than 20 pieces minted) that exceed 260 troy ounces (8 kg) of gold.
- At that time, the price of spot gold was $743.70 per ounce.
- FACT: Platinum is a very dense metal, hence it is twice as heavy as Gold.
- In addition, gold is very dense, a cubic meter weighing 19300 kg.
- Consequently, it is also one of the most expensive metals, costing about six times as much per gram as gold.
- The industrial extraction of rhodium is complex as the metal occurs in ores mixed with other metals such as palladium, silver, platinum, and gold.
- For example, gold is used in the connectors of the more expensive electronics cables, such as audio, video and USB cables.
- The average gold mining and extraction costs are $238 per troy ounce but these can vary widely depending on mining type and ore quality.
- Siberian regions of the USSR also used to be significant in the global gold mining industry.
- Gold does not react with most chemicals, but is attacked by chlorine, fluorine, aqua regia and cyanide.
- No commercially viable mechanism for performing gold extraction from sea water has yet been identified.
- Common oxidation states of gold include +1 (gold(I) or aurous compounds) and +3 (gold(III) or auric compounds).
- Gold(I), referred to as the aurous ion, is the most common oxidation state with ---soft--- ligands such as thioethers, thiolates, and tertiary phosphines.
- Gold(III) (---auric---) is a common oxidation state and is illustrated by gold(III) chloride, AuCl 3.
- Another important ore type is in sedimentary black shale and limestone deposits containing finely disseminated gold and other platinum group metals.
- The gold in rocks usually occurs as invisible disseminated grains, more rarely as flakes large enough to be seen, and even more rarely as masses or veinlets.
- Because of its historically high value, much of the gold mined throughout history is still in circulation in one form or another.
- It is claimed, that all the gold that has been mined throughout the history of mankind could be incorporated in a solid ball with a diameter of 27 metres.
- Platinum is considered a precious metal, although its use is not as common as the use of gold or silver.
- In alchemy, a base metal was a common and inexpensive metal, as opposed to precious metals, mainly gold and silver.
- Speculation about the future price of gold and other commodities is carried on at COMEX.
- The element constitutes only 0.5 ppm of the earth's crust, making it scarcer than uranium but more plentiful than gold or silver.
- Gold fields in the Free State and Gauteng provinces are deep and require the world's deepest mines.
- Gold fields in the Orange Free State and the Transvaal are deep and require the world's deepest mines.
- Most silver is produced as a by-product of copper, gold, lead, and zinc mining.
- For use in dentistry it is alloyed with silver, gold, and copper.
- Gold, silver, platinum and palladium each have an ISO 4217 currency code.
- Offers a wide selection of engagement rings, diamond rings, gemstone and gold jewelry.
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- Gold readily forms alloys with many other metals.
- In all these deposits the gold is in its native form.
- Hydrothermal ore deposits of gold occur in metamorphic rocks and igneous rocks; alluvial deposits and placer deposits originate from these sources.
- Due to its relative chemical inertness gold is usually found as the native metal or alloy.
- The transmitted light appears greenish blue, because gold strongly reflects yellow and red.
- At the end of 2001, it was estimated that all the gold ever mined totalled 145,000 tonnes.
- Gold in antiquity was relatively easy to obtain geologically; however, 75% of all gold ever produced has been extracted since 1910.
- It has been estimated that all the gold in the world that has ever been refined would form a single cube 20 m (66 ft) a side.
- It sometimes has ever been call ' Eka-gold. Rubidium Rb From the Latin, "rubidus", means "deepest red", because of color of metal through spectroscope.
- Gold is dense, soft, shiny and the most malleable and ductile of the known metals.
- Being just a bit harder than gold, silver is very ductile and malleable.
- Gold is ductile and malleable, meaning it can be drawn into very thin wire and can be beaten into very thin sheets known as gold leaf.
- It can also be used as a substitute for nickel when making white gold.
- The symbolic value of gold varies greatly around the world, even within geographic regions.
- The effort produced little gold and cost the German government far more than the commercial value of the gold recovered.
- The city of Johannesburg was built atop the world's greatest gold finds.
- Today, gold has fallen out of use in coins made for general circulation.
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