| 青海祁漫塔格成矿带骆驼峰铜钼矿床地质特征及成因探讨 |
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| 引用本文： | 杨宝凯,徐美君,苏旭亮,张涛,张学明,赵永亮,林贵,薛斌,赵闯.青海祁漫塔格成矿带骆驼峰铜钼矿床地质特征及成因探讨[J].地质学报,2019,93(S1):12-18. |
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| 作者姓名： | 杨宝凯 徐美君 苏旭亮 张涛 张学明 赵永亮 林贵 薛斌 赵闯 |
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| 作者单位： | 1) 青岛地质工程勘察院, 山东青岛，266071,1) 青岛地质工程勘察院, 山东青岛，266071；2) 山东省地矿局城市地质与地下空间资源重点实验室, 山东青岛，266071,1) 青岛地质工程勘察院, 山东青岛，266071,1) 青岛地质工程勘察院, 山东青岛，266071,1) 青岛地质工程勘察院, 山东青岛，266071,3) 青海省第三地质勘查院, 青海西宁，810029,3) 青海省第三地质勘查院, 青海西宁，810029,1) 青岛地质工程勘察院, 山东青岛，266071,1) 青岛地质工程勘察院, 山东青岛，266071 |
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| 基金项目： | 本文为青海省地质勘查基金项目（编号 2016020069kc031、2017042071kc021）资助成果。 |
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| 摘 要： | 骆驼峰铜钼矿床是祁漫塔格成矿带新发现的斑岩型铜钼矿床，位于柴达木盆地西南缘，区内出露地层主要为古元古界金水口岩群片麻岩类；岩浆岩以印支期花岗闪长岩类为主，花岗闪长岩为区内主要含矿岩性；构造以北东向张性断裂为主，为区内主要的控矿构造。区内地表及外围矿体以热液脉型铜多金属矿为主，深部矿体以斑岩型钼矿为主，总体形成以含钼斑岩体为中心的斑岩型钼矿，外围为热液脉型铜多金属矿的岩浆热液成矿系列，从地表向深部总体具绿泥石化—钾化—硅化+绢英岩化的矿化蚀变分带特征，初步建立了“上铜下钼”的成矿模式，今后的找矿思路是加强对斑岩体时空分布、成矿物质来源及成矿对比的研究，进一步建立找矿模型，为祁漫塔格地区乃至东昆仑地区铜钼多金属矿床的找矿拓宽思路。
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| 关 键 词： | 骆驼峰铜钼矿床 祁漫塔格 斑岩型矿床 找矿模型 成因探讨 |
Geological characteristics and genesis of the Luotuofeng copper- molybdenum deposit in the Qimantage metallogenic belt, Qinghai Province |
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| YANG Baokai,XU Meijun,SU Xuliang,ZHANG Tao,ZHANG Xueming,ZHAO Yongliang,LIN Gui,XUE Bin and ZHAO Chuang.Geological characteristics and genesis of the Luotuofeng copper- molybdenum deposit in the Qimantage metallogenic belt, Qinghai Province[J].Acta Geologica Sinica,2019,93(S1):12-18. |
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| Authors: | YANG Baokai XU Meijun SU Xuliang ZHANG Tao ZHANG Xueming ZHAO Yongliang LIN Gui XUE Bin and ZHAO Chuang |
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| Abstract: | The Luotuofeng copper- molybdenum deposit is a newly discovered porphyry deposit in the Qimantage metallogenic belt, and is located in the southwestern margin of the Qaidam Basin. Strata in the mining district are mainly gneiss of the Paleoproterozoic Jinshuikou Group. The magmatic rocks are dominated by the Indosinian granodiorite, and the ore- body occurs in the porphyaceous granodiorite. Moreover, the NE- trending extensional fault is the ore- controlling structure in the area. The vein- type copper polymetallic ore- bodies mainly occur in the surface and surrounding, whereas porphyry molybdenum occurs in the deep ore- bodies. Overall, this deposit is a porphyry- type molybdenum ore in the center, and the hydrothermal vein- type copper in the margin. The alteration zonation is characterized by chlorite, potassium, siliconation and smectite from the surface to the deep. Combined with previous studies, we proposed that is the Luotuofeng deposit is composed of copper in the upper and molybdenum in the lower. Therefore, the future prospecting work needs to strengthen the spatial and temporal distribution of porphyry intrusion, the source of ore- forming materials, and make a comparison of metallogenic model with other polymetallic deposit, which will contribute to establish a genetic model and broaden the method of prospecting for the Qimantage and even the eastern Kunlun area. |
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| Keywords: | Luotuofeng copper- molybdenum deposit Qimantage porphyry deposit prospecting model genesis |
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