Teach you how to identify gold ore

There are many kinds of ores in nature, and any ore containing gold is called gold ore. Because the chemical properties of gold are very stable and will not react chemically under different environments, it is necessary to identify gold ore by combining the main characteristics of gold ore with professional instruments.

Appearance identification

First, we identify the appearance of the ore. Generally, gold ores are golden yellow, black, copper or reddish brown, with a smooth and bright surface. Among them, gold ore with high gold content are mostly golden yellow in color, and sometimes there are different degrees of oxidation crystals and oxide films on the surface. However, ores with the above characteristics are not necessarily gold ore, and other methods are needed to identify them.

Weight identification

After identification through appearance, we identify the weight of the ore. Everyone knows that gold has a high density and a higher specific gravity than other metals. Generally speaking, real gold ore is heavier, with a specific gravity of about 17 to 19, and most stones have a specific gravity of 12 to 15, so we can use an electronic scale to measure the weight of the ore, first put the ore in a density solution, and then infer the density component of the ore by comparison.

Hardness identification

Then identify by the hardness of the ore. By rubbing two stones against each other, it should be gold ore that is not easy to scratch. Generally, it is tested by scratching or friction, and it can also be tested by a specific hardness instrument.

Fire identification

We can also use fire to identify whether it is gold ore. When the red-burned ore is put into water, it can produce noise and splashes, indicating that the ore is real, otherwise it is fake.

Chemical test identification

Another reliable method is chemical testing, using sodium hydroxide solution to soak the ore. If the ore does not change, it means it is real gold ore, otherwise it is fake.

The above method can preliminarily identify the authenticity of gold ore. It should be noted that with the development of technology, some people use artificial gold ore raw stones to defraud in order to gain higher profits, so it is necessary to carefully identify. If the value is relatively large, it is recommended that professionals identify it.