Since the sea is fed by rivers that flow over land containing metals, mineralsand ores, a great variety of these can be found in seawater in the form of soluble compounds. This is added to by material from hydrothermal vents — fractures in geologically active areas of the ocean floor through which hot, mineral-rich water flows into the ocean. The concentration of different elements in the oceans depends not only on their abundance in the Earth’s rocks, but in their reactivity and solubility. By far the most common metals in seawater are sodium, magnesium, calcium and potassium, in that order. These are all very common, in combined form, in the Earth’s crust, and they can form a variety of compounds that are very soluble in water. Gold, aside from being a rare element, is also very unreactive, and does not easily form compounds that can find their way into the ocean by dissolving in water. For these reasons, the concentration of this metal in seawater is extremely low. See full list on infobloom.com Gold was first detected in seawater in 1872 by the British chemist S. Sonstadt, and ever since, a number of people have promoted the idea of extracting the precious metal from the oceans. One of the most notable was the German chemist Fritz Haber, co-inventor of the Haber-Bosch process, who spent a portion of his career attempting to devise a practical method of obtaining the metal from seawater to pay for Germany’s post-World War I debt. When it became clear just how low the concentration of gold actually was, he abandoned his efforts. Despite a number of hoaxes and scams, serious interest in the subject continues, as reserves of gold on the Earth’s surface diminish. See full list on infobloom.com Due to the extreme dilution of gold in seawater, there is currently no economically viable method of obtaining the metal from this source. Vast amounts of seawater would have to be evaporated to concentrate it sufficiently to allow it to be recovered by any conventional process. This in itself would require a lot of energy, with more power and materials being consumed in the actual extraction process. The cost would amount to far more than the value of the gold obtained. The only elements that are currently produced commercially from seawater are the non-metals chlorine and bromine. In the latter case, most is obtained from more concentrated non-marine brinedeposits, but some is produced in Israel from the very salty waters of the Dead Sea. The concentrations of these elements in seawater are, however, enormously greater than that of gold. In the past, iodinehas been obtained indirectly from the sea by processing seaweed, which concentrates the element. A similar form of biologi See full list on infobloom.com for Germany Made Maindonesiary For Gold From Sand Germany Made Maindonesiary For Gold From Sand » Gold panning, or simply panning, is a form of placer mining and traditional mining that extracts gold from a placer deposit using a pan. The process is one of the simplest ways to extract gold, and is popular with geology enthusiasts especially because of its low cost and relative simplicity. Blue Goldstone is mainly made of quartz sand – a material that is considered worldwide as an unlimited material. Quartz sand is mainly mined in the USA, Slovenia, Germany, Austria, Spain and France. Most often, the gold flow occurs in a reddish-brown color. This is caused by the embedded copper crystals, the glass itself, however, has no People also ask What kind of mining is panning for gold? Form of placer mining. Panning for gold in a creek bed. Gold in the pan, Alaska. Gold panning, or simply panning, is a form of placer mining and traditional mining that extracts gold from a placer deposit using a pan. Gold panning - Wikipedia
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