新疆可可塔勒铅锌矿床地球化学研究及异常模型

GEOCHEMICAL INVESTIGATION OF THE KEKETALE LEAD-ZINC DEPOSITS IN XINJIANG AND ITS ANOMALY MODEL

可可塔勒铅锌矿床为泥盆系海相火山岩系中沉积岩容矿的块状硫化物矿床，位于阿尔泰山南缘多金属成矿带的麦兹地区。该火山岩系以Ｋ_２Ｏ＞Ｎａ_２Ｏ为特征。含矿岩系下部多数岩石中Ｐｂ、Ｚｎ等元素的含量明显偏低，容矿岩石ＣａＯ、ＴＦｅ、ＭｇＯ及Ｍｎ的含量较高，且富含Ｐｂ、Ｚｎ等元素。矿体位于Ｎａ_２Ｏ、Ａｌ_２Ｏ_３的亏损带及ＣａＯ、ＴＦｅ、ＭｇＯ和Ｍｎ的高含量区范围内。

The Kobetale lead -zinc deposit is a massive sulphide deposit hosted in marine volcano - sedimentary rock series ofLower Devonian Series in the southern Altai fringe. The Lower Devonian Series in the ore district have higher contents of Ph,Zn,Ag,Cd,As etc, but the contents of Ph,Zn etc. In rocks beneath the ore-bearing beds are obviously lower. The host rocksconcentrate Ph,Zn and CaO, TFe, MgO and Mn, and ore bodies are located in a zone enriching Cao, TFe, MgO and Mn anddepleting Na2O and Al2O3