新疆地区金矿分布特征及找矿潜力分析

Analysis on the Distribution and Ore Potentials of Gold Deposits in Xinjiang

新疆地区金矿分布广泛,截止目前,已发现了众多的大、中、小型金矿,为区内的金矿地质勘查工作奠定了良好的基础。通过对区内重点金矿的统计分析,依据其分布特征从北向南共划分出了阿尔泰、西准噶尔、东准噶尔、西天山、东天山-北山、西南天山及阿尔金7大金矿集区,按其成矿特征、成矿环境、构造条件、围岩特性、含矿建造、矿化蚀变等成矿要素特点,将新疆地区金矿成因总结为海相火山岩型、陆相火山岩型、构造破碎蚀变岩型以及沉积型4种类型,结合区内典型金矿床自身所具有的成矿特点,又细化为31个矿床式。西天山、西南天山金矿集区找矿前景最好,沿中天山构造带、北天山的南缘及南天山的北缘是寻找大型构造破碎蚀变岩型金矿的有利地段,找矿潜力巨大。

The gold deposits are widely distributed in Xinjiang, including many large, medium or small gold deposits, which has laid good foundation for ore-prospecting work. After doing the statistical analysis of gold prediction in this region, the gold deposits in Xinjiang can be divided into seven ore concentration area from north to south according to their distribution characteris- tics, such as Alta, west Junggar, east Junggar, west Tianshan, northeast Tianshan, southwest Tianshan and Altun. Based on the metallogenic characteristics, ore-forming environment, tecton- ic conditions, wall rock features, ore-bearing construction and mineralizing alteration, these gold deposits can also be attributed into four genetic types, including Marine volcanic, continental vol- canic rock, tectonoclastic altered rock and deposition type. And then, these typical gold deposits have been refined into 31 deposit models through synthesizing their metallogenic characteristics. Finally, it＇s found that the west Tianshan and southwest Tianshan have the best prospecting po- tential, the area along the southern border of middle Tianshan and northern Tianshan, as well as the northern border o.f southern Tianshan will be the favorable sections for prospecting the gold deposits, where have large potential for prospecting.