D.Hallbauer from Johannesburg in 1979 has described ???????? forms of native gold from the ores lying in a deposit Witwatersrand. Unusual clots of gold, in opinion of the scientist, were formed on a place of covers ???????? bacteria. In 1991 Waterson from the tests taken on a placer of Alaska, has allocated native gold in the form of garlands of microscopic hollow balls. In the sizes and the form they precisely corresponded to soil bacteria.
Unusual units of gold are formed as a result of full replacement bacterial ????? by metal and consequently look like microscopic balls or simple, spirally twirled and ?????????? strings in diameter about 0,002 mm. If gold replaces the whole bacterial colonies the size of units reaches several millimeters. Sedimentation of gold by microorganisms is connected by that they take the certain, necessary substances for their life from the water environment, sharply raising that the relative maintenance of gold in a solution. Metal starts to crystallize. "Alive" gold - the crystal substance which is not differing metal native gold. Only sizes of crystals are extremely small, and are located chaotically.
Bacterial membrane, growing on a surface of warm reservoirs, are capable to accumulate such quantity of gold, that it becomes favourable for extracting.
What forces bacteria to turn to gold "mummies"? The Behaviour of alive organisms always differs the certain expediency. It is possible to assume, that accumulation of gold is caused by the high maintenance of the mercury acting from hot sources together with it. Gold is an ideal absorber of mercury and protects alive cells from this fatally poisonous substance. However to live in a gold case it is impossible, therefore bacteria "get out" of covers, and all begins all over again, and covers turn to gold tubes.
Now works on "domestication" alive microorganisms for processing gold ores and looses are actively conducted. There were, that the microscopic gold particles which are being a suspension, well stick to bacteria. After that the integrated gold units can be taken.
It is already revealed, that disputes of separate soil bacteria are especially plentiful in soils nearby ore-gold deposits. So bacteria help both to extract gold, and to search for it.
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