| 甘肃小柳沟矿区钨钼矿控矿因素及成因关系探讨 |
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| 引用本文： | 白仲吾,杨彦,慕政芳.甘肃小柳沟矿区钨钼矿控矿因素及成因关系探讨[J].甘肃地质学报,2005,14(2):64-69. |
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| 作者姓名： | 白仲吾 杨彦 慕政芳 |
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| 作者单位： | [1]中国地质大学资源学院,湖北武汉430074 [2]甘肃省有色金属地质勘查局,甘肃兰州730000 |
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| 基金项目： | 国土资源大调查项目（编号：200214200033）. |
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| 摘 要： | 小柳沟矿区是北祁连造山带西段主要的钨钼成矿区。钨成矿主要受岩体、地层岩性、构造控制。岩体是成矿的最主要因素,是矿床的成矿物质来源之一,酸性侵入体为成矿提供了丰富的物质来源;岩体在侵入过程中所提供的含矿热液对元素的活化迁移起了积极作用。千枚岩、灰岩、角闪云母片岩是成矿的主要矿源层。小柳沟隐伏岩体上升形成的断层为成矿流体的运移和富集提供了条件。钼成矿与岩体及岩体顶部的裂隙网脉有关。小柳沟热流体在斑状花岗岩体顶部形成构造裂隙网,上升热流体与地下水发生对流循环,使钼在岩体和围岩的裂隙中成矿。小柳沟矿区有着三(多)位一体的成矿系列,岩体外接触带和地层层间裂隙形成以夕卡岩型为主的白钨矿,岩体内部及岩体顶部形成斑岩型和石英脉型钼矿。
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| 关 键 词： | 小柳沟矿区 控矿因素 成因关系 |
| 文章编号： | 1004-4116（2005）02-0064-0006 |
| 收稿时间： | 2005-07-13 |
CONTROLLED FACTORS AND METALLOGENIC RELATIONS OF
XIAOLIUGOU WOLFRAM FIELD IN GANSU PROVINCE |
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| BAI Zhong-wu,YANG Yan and MU Zheng-fang.CONTROLLED FACTORS AND METALLOGENIC RELATIONS OF
XIAOLIUGOU WOLFRAM FIELD IN GANSU PROVINCE[J].Acta Geologica Gansu,2005,14(2):64-69. |
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| Authors: | BAI Zhong-wu YANG Yan and MU Zheng-fang |
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| Institution: | 1. China University of Geosciences , Wuhan 430074, China ; 2. Gansu Provincial Bureau of Geology and Exploration for Nonferrous Metals, Lanzhou 730000, China |
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| Abstract: | Xiaoliugou ore field is a important wolfram and molybdenum ore field in Qilian fold system. The ore- formation of wolfram is controlled by rocks body, lithology and structure. Rock is the most important factor for the formation of the deposits. The acid intrusive rocks provided abundant source in the formation of wolfram ore deposits ,and played an active role for the thermal liquid with mineral materials moving. Carbonaceous phyllite,limestone and hornblende - biotite schist is the main source- bed for the formation of the deposits. The deep acid intrusive rocks of Xiaoliugou in the process of rising produced a series of faults, and the faults provided place for the moving and enriching of mineral liquid. There are close relationships between porphyry and oreformation of molybdenum. The thermo- karst formed fissure vein over porphyritic granite and circulated with underground water, this formed molybdenum deposit in porphyritic granite bodies and fissure vein. The skarn wolfram deposits are formed in granite contact zone and crack of stratum. The porphyry and quartz vein molybdenum deposits are formed in porphyritic granite bodies and fissure vein. |
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| Keywords: | Xiaoliugou fields Controlled factor Metallogenic relations |
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