Deep in the ice field of Siberia has a gold mine called Kobol. The minimum temperature can reach minus 50 degrees, and the nearest city distance is more than 200 kilometers away from the nearest city. The original workers must rely on the aircraft to enter and exit the factory. It is covered by ice and snow, so it seems that there is no practical effect. In addition, it is even more incredible that the food supply of workers is booked two years in advance. In this extremely difficult environment, workers have to work for 12 hours a day, and generally they have no weekends. Relatively more gratifying is that they can rest for two months every two months. It, in order to meet the needs of workers, the mine also has very complete facilities. It has various entertainment facilities, such as a rest area, gym, and so on. But even so, it is estimated that rarely can live by the severe cold. If discrimination: 1, whether gold has white highlights In material cutting to cut gold bars or gold jewelry, and observe the cut surface with a magnifying glass. Blending together, it means that the gold is mixed with crickets. 2, measured the proportion. In the weight of a pure gold bars with an balance, and then put the gold bars into a measuring cup and flood the gold bar. Then put the detected gold bars in a measuring cup, whether the scale of the water rises or decreases. As long as it changes, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air in gold jewelry. 3, real gold is not afraid of fire. This gold bars or gold jewelry burned for a while to observe its changes. Because the oxidation reaction occurs with oxygen in the air, the gold bars with insufficient purity will become gray; and the color of the pure gold will be red after the fire is baked. However, this method may be destroyed to jewelry.
The gold mines formed in the change of nature can be divided into three categories: rock gold mines, sand gold mines, and accompanying mines. In the world, the proportion of the reserves of rock gold, accompanying gold and sand gold is about: 70: 15: 15: 15 Among them, the rock gold mine can be divided into several causes: magma hot liquid type, metamorphic thermal type, volcanic thermal fluid type, sedimentary metamorphosis type, hot water -soluble filtering and metamorphic fraga type. The proportion of types of gold mines in the world's total reserves is: 56.2%of metamorphic fragrance type, 12.4%of spoiled thermal fluid types, 9.5%with gold, 8.9%of sand gold, magma hot fluid type and volcanic hot fluid fluid Type 7.0%, hot water -soluble filter 0.9%.
Deep in the ice field of Siberia has a gold mine called Kobol.
The minimum temperature can reach minus 50 degrees, and the nearest city distance is more than 200 kilometers away from the nearest city. The original workers must rely on the aircraft to enter and exit the factory. It is covered by ice and snow, so it seems that there is no practical effect. In addition, it is even more incredible that the food supply of workers is booked two years in advance.
In this extremely difficult environment, workers have to work for 12 hours a day, and generally they have no weekends. Relatively more gratifying is that they can rest for two months every two months.
It, in order to meet the needs of workers, the mine also has very complete facilities. It has various entertainment facilities, such as a rest area, gym, and so on. But even so, it is estimated that rarely can live by the severe cold.
If discrimination:
1, whether gold has white highlights
In material cutting to cut gold bars or gold jewelry, and observe the cut surface with a magnifying glass. Blending together, it means that the gold is mixed with crickets.
2, measured the proportion.
In the weight of a pure gold bars with an balance, and then put the gold bars into a measuring cup and flood the gold bar. Then put the detected gold bars in a measuring cup, whether the scale of the water rises or decreases. As long as it changes, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air in gold jewelry.
3, real gold is not afraid of fire.
This gold bars or gold jewelry burned for a while to observe its changes. Because the oxidation reaction occurs with oxygen in the air, the gold bars with insufficient purity will become gray; and the color of the pure gold will be red after the fire is baked. However, this method may be destroyed to jewelry.
The gold mines formed in the change of nature can be divided into three categories: rock gold mines, sand gold mines, and accompanying mines. In the world, the proportion of the reserves of rock gold, accompanying gold and sand gold is about: 70: 15: 15: 15 Among them, the rock gold mine can be divided into several causes: magma hot liquid type, metamorphic thermal type, volcanic thermal fluid type, sedimentary metamorphosis type, hot water -soluble filtering and metamorphic fraga type. The proportion of types of gold mines in the world's total reserves is: 56.2%of metamorphic fragrance type, 12.4%of spoiled thermal fluid types, 9.5%with gold, 8.9%of sand gold, magma hot fluid type and volcanic hot fluid fluid Type 7.0%, hot water -soluble filter 0.9%.
South Africa
Gold mine
Dream