使用自然铜是人类进入金属时代的前奏。自然铜也称天然铜,常见于发育完整的铜矿氧化带中,系由硫化铜矿物在氧化淋滤过程中与高价铁反应而生成,其中由辉铜矿与赤铁矿及硫酸反应生成的称为原生自然铜,由辉铜矿硫酸铁及水反应生成的称为次生自然铜。自然铜很纯,仅含少量的银、砷、铋、汞,晶格粗大 The use of natural copper is a prelude to the age of mankind into the metal. Natural copper, also known as natural copper, is commonly found in the fully developed copper oxidation zone, which is formed by the reaction of copper sulfide minerals with high-valent iron during leaching and leaching processes, where the reaction is caused by the reaction of chalcocite with hematite and sulfuric acid Called native copper, copper is called secondary natural copper produced by the reaction of gibbsite iron sulfate and water. Natural copper is pure, with only a small amount of silver, arsenic, bismuth, mercury, coarse crystal lattice