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How to identify gold mines

gravity concentration

This method uses the proportion difference between gold and other minerals for further flotation. The greater the difference in their proportions, the easier it is for them to separate. Sand containing gold ore can be put into a cylindrical screen and discharged by high-pressure water. This method is generally used for quicksand ore and fine ore.

Extended data 1. Uses of chalcopyrite: In industry, chalcopyrite is the main raw material for copper smelting. In the field of gemology, it is rarely used alone and occasionally used as a substitute for pyrite. In addition, it often participates in the composition of some colored stones, inkstones and jade.

2. Use of pyrite: pyrite is the main mineral raw material for extracting sulfur and producing sulfuric acid. When associated elements contain gold, cobalt and nickel, they can be extracted. Pyrite is also a very cheap ancient gem. In Victorian England, people liked to decorate this kind of gem with special shape and ornamental value. It can be used not only for grinding precious stones, but also as a base for jewelry, jade and other handicrafts.

3. Uses of natural gold ore: Gold is widely used in electronic industry because of its high electrical and thermal conductivity, good ductility and stability. Aerospace technology requires high stability of radio and electronic components, and gold has this performance. Gold is also used as the lining of nuclear reactors. In aerospace and aviation industry, gold is used to coat the heat shields or heat shields of jet engines and rocket engines.