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玉龙铜矿床表生成矿过程中成矿物质主要呈碳酸盐络合物的形式迁移。以孔雀石、蓝铜矿组合为主的次生富集带是在碱性(pH= 7.15～11.55)、氧化(Eh> 0.14)的环境中形成的,所以它们相对靠近氧化带的上部及碳酸盐岩发育的地区分布。以赤铜矿、自然铜组合为主的次生氧化物富集带形成环境为弱氧化-还原(Eh< 0.16),它们常靠近氧化带的中、下部分布。表生成矿环境中CO2 含量高是玉龙铜矿床氧化带中黑铜矿极不发育的根本原因。pH值升高与氧化-还原电位(Eh 值)的降低是造成矿质沉淀(次生富集)的两种机制。
The ore-forming materials in surface mineralization of Yulong copper deposit are mainly in the form of carbonate complexes. The secondary enrichment zone dominated by malachite and cyanobacite is formed in the alkaline (pH = 7.15 ~ 11.55) and oxidation (Eh> 0.14) environments, so they are relatively close to the upper part of the oxidation zone and the carbon Regional distribution of acid rock development. The formation of secondary oxide-rich zones mainly composed of red copper and natural copper is weak oxidation-reduction (Eh <0.16), and they are often distributed in the middle and lower parts of the oxidation zone. The high CO2 content in the epigenetic ore-forming environment is the fundamental reason for the extremely undeveloped black copper deposits in the oxidation zone of the Yulong copper deposit. The two mechanisms of mineral precipitation (secondary enrichment) are the increase of pH value and decrease of oxidation-reduction potential (Eh value).