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How is the gold mine formed? How did the ancients explore gold deposits?
Gold ore or gold deposit (mountain). Gold ore is a mineral aggregate with sufficient gold content and industrial utilization value. Gold mine is the place where gold is obtained through mining operation, and it is the accumulation of industrial gold ore with a certain scale formed through mineralization. The world's gold treasures are mainly stored underground in two forms: rock gold and placer gold. In addition, there are associated gold, celestial movement, earth formation, eruption, ancient orogeny, magma spewing, and gold element is entrained and ejected from the core to form rock gold.

Gold-rich mountains form placer gold deposits in sunlight weathering, lightning, storms, landslides, mud stones, floods and precipitation in stable reaches. All provinces and cities in China have gold mines except Shanghai. The main producing areas are Shandong, Henan, Guizhou, Heilongjiang, Shaanxi, Guangxi, Yunnan, Liaoning, Hebei, Xinjiang, Sichuan, Gansu, Inner Mongolia, Qinghai, Anhui and other provinces.

There are four main gold producing areas in China, namely Jiaodong Peninsula, Xiaoqinling area, Yunnan-Guizhou-Guangxi Golden Triangle and several northwest provinces (Xinjiang, Qinghai, Sichuan and other provinces), among which Shandong's gold production accounts for most of China's gold production. There is still great development potential. The output of gold in other major producing areas has been increasing in recent years, but it is still difficult to form an absolute substitute for the old producing areas in Shandong.

No metal in the world can continuously participate in human economic life like gold, which has such a huge impact on human society. Its dazzling luster and unparalleled physical and chemical characteristics have magical and eternal charm. Although the social status of gold has experienced vicissitudes, ups and downs, ups and downs, ups and downs, ups and downs in the history of human civilization for thousands of years.

But in many people's minds, it still maintains a sacred aura, which is the wealth pursued by the world. Gold mine is the original material of the earth. The crust formed by the early development of the earth is rich in gold. Therefore, it can generally represent the Archean greenstone belt composed of early residual crust. Especially the combination of mafic and ultramafic volcanic rocks, whose gold abundance is higher than all kinds of rocks in the crust, may become the earliest gold deposit? Source bed? .