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10 facts about gold

We have already extracted about 80% of the total 244,000 tons of minable gold in the world.

What is the gold of fools? Where does most of the world’s gold currently come from? Is the Nobel Prize made of gold? These and other questions are answered by writer Emily Goodman in this report published by the American “Reader’s Digest” magazine.

1- Pure gold can be stretched

A 50-mile (one mile is 1.6 km) strand of one ounce of pure gold can be stretched without breaking; This strand will be so thin that it cannot be easily seen with the naked eye. If we add the amount of gold in the world, we can get a thin thread that wraps around the globe 11 million times.

2- Do not bite the gold

Contrary to popular belief, biting down gold and showing teeth marks on it is not an effective way to ensure its purity. Gold medals, for example, are soft enough to show tooth marks, knowing that they have not been made of pure gold since the 1912 Summer Games in Stockholm. Most of the modern gold medals are silver, and the medals for winners at the 2016 Rio de Janeiro Olympics contain only 1.2% of gold.

3- The Nobel Prize is made of gold

The Nobel Prize is made of gold, but its purity has gradually decreased since 1980, going from 23 karat to 18 karat gold plated with 23 karat. The value of gold in each medal is about 8 thousand dollars.

4- Gold color can be changed

The natural yellow gold color is affected when mixed with other metals, which gives it more hardness. White gold contains nickel or palladium, while pink gold acquires its color from copper added to it, and there is also green color that is a product of mixing gold, silver, and sometimes zinc or cadmium. To determine the percentage of gold in any piece, divide the karat content by 24 and multiply it by 100, and the resulting percentage will represent the amount of gold.

5- Pyrite is the mineral known as fools’ gold

Pyrite, a mineral known as fools’ gold, has deceived many, including Christopher Newport, an English sailor and pirate and a Jamestown explorer, who sailed with a cargo to London in the 17th century. Although pyrite can be a disappointing find, it is often found near real gold sources, so a gold finder who stops digging as soon as he finds a piece of pyrite may be truly foolish.

6- The US Treasury Department currently owns 147.3 million ounces (an ounce is equivalent to about 28 grams) of gold bars

Nearly half of this amount, which is estimated to be worth more than $ 130 billion, is stored in the American Alloy Depository Building known as Fort Knox. And this place is reinforced with tight security so that the only president who entered this castle is Franklin Roosevelt, and he was the one who effectively pulled us off the gold standard in 1933, which the United States did not completely abandon until 1971.

7- Most of the world’s gold is mined in China

China surpassed South Africa in total gold production in 2017, but the world’s largest gold crystal – a very rare geometric formation that can appear on gold samples – weighs 7.7 ounces, which were found decades ago in Venezuela.

8- Some gold comes from wastewater

Among the most surprising sources of gold is treated wastewater. In 2015, after analyzing sewage sludge from local treatment plants, researchers at Arizona State University concluded that the wastewater produced annually in a city with a population of one million provides, on average, $ 2.6 million worth of gold and silver.

9- We have extracted about 80% of the world’s gold

We have already extracted about 80% of the total 244,000 tons of minable gold in the world. The ocean water and the seabed contain about 20 million additional tons, and it cannot be extracted due to the high costs involved. There is a large amount of gold in outer space, and the value of the gold found on one asteroid alone (called Siki 16) is hundreds of billions of dollars.

10- Until now, we have transported gold to outer space and we have not brought gold from there

Space suits and spacecraft are gilded to reflect the sun’s harmful infrared rays. NASA seeks to coat any compound with gold to keep it cool because radiation generates a lot of heat.

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