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Mountain gold

Berggold

The formation of mountain gold

The term "mountain gold" refers to the location where the gold is found. Mountain gold refers to all primary deposits of the precious metal . Gold placers in rivers are not included in the category of mountain gold; these are secondary deposits.

Gold from the rock is formed hydrothermally, meaning that fluids containing the element gold mix with rock debris, causing the minerals within to slowly crystallize. This usually occurs in vein-like areas, in the case of gold from the rock, usually in quartz veins.

The most important primary deposits were formed during the accumulation of adjacent rock layers and in the areas where oceanic plates meet the continental crust.

Therefore, mountain gold is mainly found near mountains or in coastal regions. The most important deposits are in the Russian Ural Mountains, California, Hungary, Romania, Zimbabwe, New Guinea, and Mexico.

The mining of mountain gold

Gold from the mountain occurs in very finely distributed rocks. A tonne of the raw material contains a maximum of 25 g of fine gold, but often an even smaller proportion. If this is less than 2.5 g per tonne, mining becomes unprofitable. One obstacle to the extraction of gold from the mountain is the very high temperatures. The South African "Western Deep Levels Mine" is an exception to this. This gold mine, which is the deepest in the world at up to 4,000 m, is characterized by the fact that temperatures here only rise to 50°C.

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