东昆仑德尔尼铜矿“碳质(砂)板岩”的岩类学、岩石化学及其地质意义

Petroregimentation,Petrochemistry and Geologic Meaning of “Carbonaceous (Gritstone) Slabstone” in Deerni Deposit,Eastern Kunlun Area, Northwest China

摘要: 德尔尼大型钴铜矿床是一个以海底喷流-沉积成矿为主体,以后期叠加成矿为特色的复合成矿作用的矿床。通过岩类学、岩石化学把德尔尼地区出露的"碳质板岩"分为两类,即含碳铝硅质板岩和含碳铁硅质岩,而后者为热水沉积岩。基于这种热水沉积岩业已成矿,因此是德尔尼矿床成矿作用的一部分产物。

Abstract: The Deerni Co-Cu depositis mainly formed by submarine exhalative-sedimentation,which is also charact erized by late-stage superimposed mineralization.According to petroregimentation and petrochemistry,"carbonaceous slabstone" in Deerni deposit may be divided into two categories: carbonaceous Al-Si slabstone and carbonaceous Fe-Si rock.The later is hydrothermal sedimentary rocks and the hydrothermal sedimentary rocks have formed deposit.Therefore,it is part of the outcome of Deerni mineralization.