黄金,化学元素金(化学元素符号Au)的单质形式,是一种软的,金黄色的,抗腐蚀的贵金属,不仅是用于储备和投资的特殊通货,同时又是首饰业、电子业、现代通讯、航天航空业等部门的重要材料。有研究表明,19世纪之前数千年的历史中,人类总共生产的黄金不到1万吨,如18世纪的100年仅生产200吨黄金。由于19世纪一系列黄金资源的 Gold, the elemental form of chemical elemental gold (chemical elemental symbol Au), is a soft, yellowish, anti-corrosive precious metal that is not only a special currency used for reserves and investments, but also a jewelry, electronics, Modern communications, aerospace industry and other departments of important material. Studies have shown that human beings produced less than 10,000 tons of gold in the history of thousands of years before the 19th century, and only produced 200 tons of gold in the 100 years of the 18th century. Due to a series of golden resources of the 19th century