论文部分内容阅读
新疆乌伦布拉克铜矿含矿花岗质潜火山杂岩包括由先而后依次侵入的浅成相闪长岩、石英闪长岩、斜长花岗岩和超浅成或次火山相英安玢岩以及与之密切伴生的英安玢岩质隐爆角砾岩。含矿杂岩属钙碱系列，具有低Ｓｉ、低碱，富Ｎａ贫Ｋ，过铝质－偏铝质，轻稀土富集、重稀土亏损、铕弱负异常，强不相容元素相对富集，Ｎｂ和Ｔｉ强烈亏损，Ｒｂ、Ｔｈ、Ｋ、Ｔｂ相对富集等岩石地球化学特点，成因上属造山壳幔同熔型花岗岩类。杂岩体由早到晚逐渐向富Ｓｉ、碱、Ｋ，贫Ｎａ、Ｆｅ、Ｍｇ方向结晶分异演化，铜矿化也随之逐渐增强。
The ore-bearing granito-subvolcanic volcanic complexes in the Ulung Burak Copper Mine in Xinjiang include epithermal, quartz diorite, plagiogranite and super-shallow or subvolcanic amphibolite from intrusion As well as with its closely associated with the British rock igneous rock cryptoexplosion breccia. The ore-bearing complex is a series of calcium and alkali minerals with low Si, low alkali, Na rich K, peraluminous - partial aluminum, light rare earth enrichment, heavy rare earth loss, weak anomaly of europium, relatively strong incompatible elements Set, Nb and Ti loss of a strong, Rb, Th, K, Tb relative enrichment of rock geochemistry, genesis of the upper orogenic crust-mantle with the same type of granite. From early to late, the complex bodies gradually differentiated into Si, Alkali, K, Na, Fe and Mg-depleted crystals, and their mineralization gradually increased.