中文摘要：

艾日垦其垦矿床是近年发现的铜钼矿床，位于中国西天山东部，处在中亚成矿带腹地。主要赋矿岩石为二长花岗岩，可划分为钾化带、硅化带、青磐岩化带和绢英岩化带等4个明显的蚀变带，且成带状分布，主要受那拉提南缘断裂控制。本文对矿脉中钾长石和岩体中绢云母进行了年龄测试，结果显示热液作用时限为268.35±4.05 Ma，岩浆作用时限为321.43±4.24 Ma。主微量元素分析测试显示出赋矿岩体富Si（SiO2=71.01%～73.94%），富碱（Na2O＋K2O=5.53%～7.80%），贫钙（CaO=1.95%～2.93%），高Sr（〉417×10-6）低Y（〈12.3×10-6），总体上富集大离子亲石元素LILE（Ba、Th、Rb、K），亏损高场强元素HFSE（Nb、Ta、Ti），微量元素比值暗示曾发生下地壳加厚作用。流体包裹体测试结果显示出本矿床含矿脉体主要为变质流体包裹体，且近定向排列，具有低温低盐度特征，这与典型斑岩型矿床区别很大。研究认为本区在石炭纪岩浆侵入阶段并未形成矿床，但形成了铜钼等金属的预富集，二叠纪的热液作用是形成矿床的关键过程，与当时发生的韧性剪切作用关系密切，断裂为成矿热液上移提供动力和通道。

英文摘要：

Located in the eastern part of the West Tianshan Mountains, the Airikenqiken ore district, discovered in recent years as a Cu-Mo deposit, possesses an important position in the Middle Asia metallogenetic belt. The main ore-hosting rock is monzogranite. The deposit possesses four banded alliterated belts, namely potassic belt, silicification belt, phyllic belt and propylitization belt, controlled mainly by fractures in the south margin of Nalati. The authors analyzed K-feldspar in ore veins and sericite in rock bodies, and the K/Ar dating results show that the age of metallogenesis is 268.35±4.05 Ma and that of the mineralization is 321.43±4.24 Ma. Elements analyses show that the magmatic body has high Si （SiO2=71.01%～73.94%）, high alkali （Na2O＋K2O=5.53%～7.80%）, low Ca （CaO=1.95%～2.93%）, high Sr （〉417×10-6）, and low Y （〈12.3×10-6）, with the enrichment of LILE （Ba, Th, Rb, K） and depletion of HFSE （Nb, Ta, Ti）, whereas trace elements characteristics imply lower-crust related genesis. In addition, fluid inclusions in this deposit are mainly directional fluid intrusions, and most of them are of metamorphism genesis. They have low-temperat ure and low- salinity characteristics, quite different from features of typical porphyry deposits. The authors hold that this district didn＇t form deposit during magmatic intrusion in Carboniferous period, but it experienced pre-enrichment of metals. Hydrothermal process in Permian period played the most important role in the formation of the ore deposit, which was closely related to the ductile shear zone in that the ductile shear process provided channel and force for the upward migrating ore-forming hydrothermal fluids.