| 新疆阿尔泰阿舍勒矿集区铜多金属矿床模型 |
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| 引用本文： | 杨富全,吴玉峰,杨俊杰,郑佳浩.新疆阿尔泰阿舍勒矿集区铜多金属矿床模型[J].大地构造与成矿学,2016(4):701-715. |
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| 作者姓名： | 杨富全 吴玉峰 杨俊杰 郑佳浩 |
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| 作者单位： | 1. 中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室,北京,100037;2. 新疆大学新疆中亚造山带大陆动力学与成矿预测实验室,新疆乌鲁木齐,830046 |
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| 基金项目： | 国家自然科学基金项目(41272103)，“十二五”国家科技支撑计划项目(2011BAB06B03-02)联合资助。 |
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| 摘 要： | 阿舍勒是新疆十分重要的铜多金属矿集区,矿化均赋存于下–中泥盆统阿舍勒组火山岩系中。矿化类型多,成矿元素组合复杂(Cu、Cu-Zn、Cu-Zn-Au、Cu-Pb-Zn-Au、Cu-Pb-Zn-Ag)。阿舍勒组火山活动时间是402~375 Ma,矿化时间为394~379 Ma,持续了15 Ma。本文通过对阿舍勒铜锌矿和萨尔朔克金多金属矿的系统研究,提出阿舍勒矿集区矿床模型,认为尽管矿集区铜多金属矿化类型多,成矿元素组合复杂,但成矿均与火山作用有关,属同一VMS成矿系统,只是不同部位存在矿化差异。在火山斜坡和洼地喷流沉积形成层状铜锌矿体和重晶石矿体,补给通道中形成脉状铜(锌)矿体和铜铅锌银矿体,潜流纹岩中形成脉状金铜铅锌矿体,潜英安岩中形成铜矿体,潜火山岩接触带形成铜矿体,在断裂或裂隙中形成铜矿体。
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| 关 键 词： | 地质学 矿床模型 VMS型矿床 阿舍勒盆地 阿尔泰 |
Metallogenetic Model for VMS Type Polymetallic Copper Deposits in the Ashele Ore Dense District of Altay,Xinjiang |
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| Abstract: | Ashele is a very important polymetallic copper ore-concentrated area in Xinjiang, and the ore are hosted in the volcanic rocks of the Lower-Middle Devonian Ashele Formation. The area hosts diverse types of mineralization and complex combinations of ore-forming elements (Cu, Cu-Zn, Cu-Zn-Au, Cu-Pb-Zn-Au, Cu-Pb-Zn-Ag). The Ashele Formation formed during 402~375 Ma, and the associated mineralization lasted for 15 Ma in the interval of 394~379 Ma. Systematic study of the Ashele copper-zinc deposit and the Sarsuk polymetallic gold deposit, and combined with a detailed study of the data available, the authors put forward a metallogenetic model for the Ashele ore-concentrated area. Despite the diverse types of mineralization and complex combinations of ore metals, the ore-forming processes were closely associated with the volcanism as a unified VMS mineralization system, only different in occurrences. The layered copper-zinc orebodies and barite orebodies were formed by exhalative sedimentation in the volcanic slopes and depressions, the veinlet copper (zinc) orebodies and copper-zinc-lead orebodies were formed in the stringer or stockwork zone, veinlet gold-copper-lead-zinc ores were formed during the intrusion of the rhyolite porphyry. The copper ores ere formed in the dacite porphyry, subvolcanic contact zones, as well as fault or fracture. |
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| Keywords: | geology mineral VMS deposit Ashele Basin Altay |
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