Names for Gold

There are several gold name based on the type of metal mixtures:

Blue gold, gold and iron mixture.
Green gold, gold with a mix of silver more than copper.
Pink gold or Rose gold, a mixture of 50% gold, 45% copper 5% silver.
White gold, gold with a mix of nickel, zinc, copper, lead, and manganese.
Yellow gold, a mix of 50% gold, 25% silver and 25% copper.

Green Gold

In addition there was also the name of Nordic Gold, a metal mixture to affect the color of gold, but it does not belong to citizens. Generally used in the manufacture of jewelry or coins. Composition is 89% copper, 5% aluminum, 5% zinc, and 1% tin. and never contain gold.

Gold Price - Gold Value

Like other precious metals, gold is measured in troy weight and grams. When alloyed with other metals, the term carat or karat is used to show the purity of gold present, with 24 carat gold is pure and lower ratings proportionally less. Purity and gold bar or coin can also be expressed as a decimal number ranging from 0 to 1, is known as the clarity Milli, such as 0.995 are very clear.

The price of gold is determined by trading in gold and derivatives markets, but a procedure known as the setting of gold in London, originating in September 1919, offers day-to-day reference price in the industry. The afternoon fixing was introduced in 1968 at a price when U.S. markets are open.

A Swiss-cast 1 kg gold bar.

Historically, gold coins were widely used as currency, paper money was introduced, it typically was a receipt to exchange a gold coin or bullion. The monetary system known as the gold standard, a certain weight of gold was given the name of the unit of currency. For a long time, the United States government, the value of the U.S. dollar, so troy ounce is equal to $ 20.67 ($ 664.56/kg), but in 1934 the dollar was devalued to $ 35.00 per ounce ($ 1,125.27 / kg). In 1961, it will be difficult to maintain prices, and agreed to manipulate the market to prevent further currency devaluation against increased gold demand, which pool of U.S. and European banks.

On 17 March 1968, the economic situation has caused the collapse of the gold pool, and two price system was established, where gold is still used to settle international accounts at the old $ 35.00 per troy ounce ($ 1.13 / g) but the price of gold on the private market was allowed to move; This two-tier pricing system was abandoned in 1975 when the price of gold was left to find a market level. Central banks still hold historical gold reserves as a store of value, although the levels are generally declining. The largest gold deposits in the world, the U.S. Federal Reserve Bank of New York, which is 3% of the gold ever mined, as both laden U.S. Bullion deposit Fort Knox. In 2005, the World Gold Council estimated total global gold supply 3859 tonnes and demand to be 3,754 tonnes, which is the excess of 105 tonnes.

Rare Gold Nugget Gallery Part 1

Nuggets are gold fragments weathered out of an original lode. They often show signs of abrasive polishing by stream action, and sometimes still contain inclusions of quartz or other lode matrix material. A gold nugget is a naturally occurring piece of native gold. Watercourses often concentrate nuggets and finer gold in placers. Nuggets are recovered by placer mining, but they are also found in residual deposits where the gold-bearing veins or lodes are weathered. Nuggets are also found in the tailings piles of previous mining operations, especially those left by gold mining dredges.

Crystalline gold from Mina Zapata, Santa Elena de Uairen, Venezuela. Size: 3.7×1.1×0.4 cm

Relative sizes of an 860 kg block of gold ore, and the 30 g of gold that can be extracted from it. Toi gold mine, Japan.

Gold Mining - Gold Price is Raising

The city of Johannesburg located in South Africa was founded as a result of the Witwatersrand Gold Rush which resulted in the discovery of some of the largest gold deposits the world has ever seen. Gold fields located within the basin in the Free State and Gauteng provinces widely in strike and dip requiring some of the deepest mines in the world, with the Savuka and TauTona mines currently deepest gold mine in the world at 3,777 m. The Second Boer War of 1899-1901 between the British Empire and the Afrikaner Boers was at least partly over the rights of miners and gold gaining wealth in South Africa.

The entrance to an underground gold mine in Victoria, Australia

Other major producers are the United States, Australia, Russia and Peru. Mines in South Dakota and Nevada supply two-thirds of gold used in the United States. In South America, the controversial project Pascua Lama aims at exploitation of rich fields in the high mountains of Atacama Desert, at the border between Chile and Argentina. Today about one-quarter of the world gold output is estimated to originate from artisanal or small scale of mining.

Since the 1880s, South Africa was the source for a large proportion of the world's gold supply, with about 50% of all gold ever produced to be from South Africa. Production in 1970 accounted for 79% of world supply, which produces about 1,480 tonnes. Production for 2008 was 2,260 tonnes. In 2007 China (with 276 tonnes) overtook South Africa as the world's largest gold producer, the first time since 1905 that South Africa is not the greatest.

At the end of 2009, it is estimated that all the gold ever mined totaled 165,000 tonnes. Be represented by a cube with an edge length of about 20.28 meters. At $ 1600 per ounce, 165,000 metric tons of gold would have a value of $ 8.8 trillion.

Source: Wikipedia

How Gold Was Formed on Earth

Like all elements of atomic numbers larger than iron, gold is a supernova nucleosynthesis process is believed to occur by. The explosion of the space in which they later formed in our solar system and the Earth in the metal-containing dust (heavy elements like gold included) scattered. Because the Earth was molten when it was just, gold exists on Earth has been in almost all the major. Gold that currently most of the planet's crust mantle today and skirmishes during the late heavy bombardment was distributed on Earth.

On Earth, gold ore is found in Precambrian rock formation time. It often occurs as a native metal, usually silver solution (ie gold, silver alloy) Metal closely. Alloys are usually 8-10% of the silver content. Electrum elemental gold with more than 20% silver. Mother with electrum silver color runs from golden-silver, silver, depending on the content. More silver, low specific gravity.

Great Golden:

This 156-troy-ounce (4.9 kg) nugget, known as the Mojave Nugget
was found by an individual prospector in the Southern California Desert
using a metal detector.

Native gold occurs as very small microscopic particles embedded in rock are often called "Fool's Gold", which is pyrite, quartz or sulfide minerals such as with. These deposits, called plaque. Also free to ply their original state in the form of metals, grain or large tumor that has reduced the rocks and alluvial deposits PLACER is found in the form of deposits with the ending. Free gold is always richer at the surface as the gold-bearing veins [clarification needed] with weathering, and streams and rivers, where it collects and can be welding by water action to form a tumor, followed by washing minerals in the dust due to oxidation.

What Is Gold?

What is Gold? Gold is a metallic element with atomic number 79 and symbol Au. While gold's name comes from the Old English word meaning yellow, the symbol comes from the Latin aurum, meaning "dawn."

In the periodic table of elements, gold was found in Group 11, along with silver, copper, and roentgenium, and Period 6 between platinum and mercury. This is referred to as the "transition metals" and a metal, the soft resilient. Described as yellow, gold is one of the so-called precious metals, along with silver.

Stack of Gold

Known from ancient times - along with the mercury, sulfur, copper, silver, tin, and lead - gold was used as early 6000 BC Early uses including jewelry, including bracelets and rings, and ornaments. Flexibility means that the initial use of the individual items is practically impossible, so it is restricted to the decor. The civilization that used it, including Egypt, Greece, Mesopotamia and Rome.

Gold was discovered in the second layer of deposits and placer deposits, and naturally uncombined. While the biggest deposits found in South Africa, deposit notes also located in Australia, the Soviet Union, and a number of Western countries from the United States, including in Southwest Arizona, California, Montana, and Washington in the Pacific Northwest, and South Dakota in the Midwest.