新疆西天山金属矿床、成矿系列及形成演化规律

Metal logenic Serieses and Their Formation and Evolution in Western Tianshan, Xinjiang

笔者根据对西天山北部大量矿床和矿点研究,在对西天山成矿类型及成矿控制因素分析的基础上,将该区金属矿床主要划分为3个成矿系列类型,即:①与中酸性、酸性花岗岩类有关的Cu-Fe-Au-Mo-W-Sn-Pb-Zn成矿系列类型;②与基性-中性-酸性火山岩建造有关的Cu-Fe-Au成矿系列类型;③与沉积岩、热水沉积岩有关的层控Cu-Pb-Zn成矿系列类型。每个成矿系列类型具有不同的成矿特征和成矿背景,成矿系列的划分和研究,揭示出区域上矿床时空分布的一些本质性规律,对于成矿预测有十分重要的意义。

Western Tianshan is one of the most famous metallogenic belt in China, where there are many useful mineral resources. especially the nonferrous and noble metals, and also rich in ferrous metal. The metallogenic series (or minerogenitic sereis) of western Tianshan has been studied in this paper based on an analys is of the main metallogenic types and factors. According to lots of material about the ore deposits and occurances in the western Tianshan, there metallogenic series in the area has been recognized, (T)Cu-Fe-Au-Mo-W-Sn-Pb-Zn metallogenic series related to intermediate-acid-acid granite; (2)Fe-Cu-Au metallogenic series ralated to basic-intermediate-acid volcanic formation; (3)Stratbound Cu-Pb-Zn metallogenic series related to the sedimentary rocks and hydrothermal sedimentary rocks. Each series showes its own metallogenic features and background. The division and study of the metallogenic series have revealed some regional time-space distribution characteristics of the ore deposits, which are important for the metallogenic prognosis.