الخميس، 4 نوفمبر، 2010

Gold


Gold ore

Most of the gold which was discovered 6000 years ago stillPossession of rights. Though the compilation of this gold was melted down andA cube with sides 59 ft long and weighed 103.000 metric tons

Gold is a metal more flexibility and can voluntarily withdrawPer ounce in the form of a wire length of 5 miles or roadsIn the form of extremely thin plate to cover the areaOf 100 square feet

Gold is more dense elements of the world, it is denserOf iron two and a half times and lead twice.
** The square feet of gold weighs about 1200 lbs.
** The extract one ton in the mines can be obtainedThrough him, one ounce of gold

Federal Reserve Bank in New York City stores12.500 metric tons of gold worth about $ 144 billionDollars in the safe area of land under half the size ofSoccer stadium.
** An estimated $ 8 billion tons have melted in the oceans of the world, And that there are 35 thousand metric tons are still present in the earth's crust.


Manually extract the gold
Carat word (a word used to describe the jewelry) Derived from the words in Arabic, Greek and Italian to prescription pillsCarob tree. The carob tree seeds usedKthagl by traders when selling gold and jewelry

Goldsmith used in the detection of the purity of a sample of gold 24 needle reach the golden purity of the first to 1 / 24 of the last The sample is selected by the scratch test for gold and then Compared with scratches caused scratches caused by needles. Although the use of Mahkat and needles for the detection of However, the purity of gold is no longer fashionable, however, that the system of purity Remains. Thus, the gold is 24 carat gold 100% pure and 18 carat gold is a part of 18 Gold and 6 parts of other metals, and so on

The first production of gold in the United States was in the NorthKarawlinia and not in California and that in 1799 then followed byThe productivity of the other in an atmosphere Rgia in 1828.


** Is mine (Hom steak) in LEED, South Dakota, The oldest gold mine in the world, has been the discovery of goldThere throughout the past 115 years.

The largest block is gone undiscovered (Wellcome Stranger) And discovered in Australia in 1896, which weighs 2.280 ounces




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