簡介:"自然銅的顏色與條痕均為銅紅色,若在潮濕空氣中暴露太久,會發生化學作用,先是在表層呈深褐色,隨後慢慢的生成一層綠色含水碳酸銅薄膜,是為銅綠。 自然銅易氧化,氧化後常變為銅的氧化物或碳酸鹽,如赤銅礦、孔雀石、藍銅礦等次生礦物。 自然銅在自然界產出並不多見,我們日常所使用的銅,主要是由銅的硫化物提煉而來。銅的導電性僅次於銀,但因其數量較多,價位低廉。在銅器時代多用在鐘鼎、器皿和工具上,現今文明時代,則普遍應用在電器工業、貨幣、裝飾品等方面。礦物自然元素自然銅Native CopperThe color and streak is copper red, tarnishing brown to black when exposed in the wet air, often with blue-green patchesNative copper is easy to be oxidized as copper oxide or CO3 such as the association of cuprite, malachite, azurite. Native copper is available only in small quantity, and the cooper used in our daily life is refined from sulfides. The electric conductivity is next to that of silver, but due to lower price and availability, in the Copper Age, it had been widely used in bells, utensils, and tools . In the modern society, copper has been applied to electronics, coin making, and ornaments."