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| 新疆尼勒克县加曼特金矿床地质及流体包裹体研究 | |
| 引用本文： | 吴艳爽 李,诺 汪立今 周可法 马海杰.新疆尼勒克县加曼特金矿床地质及流体包裹体研究[J].中国地质,2012,39(3):760-768. |
| 作者姓名： | 吴艳爽 李 诺 汪立今 周可法 马海杰 |
| 作者单位： | 1. 新疆大学地质与勘查工程学院,新疆乌鲁木齐,830046 2. 北京大学造山带与地壳演化教育部重点实验室,北京,100871 3. 中科院新疆生态与地理研究所,新疆乌鲁木齐,830011 4. 新疆有色地质勘查局703队,新疆伊宁,835000 |
| 摘 要： | 新疆尼勒克县加曼特金矿床产于下石炭统大哈拉军山组的一套中酸性火山岩中,矿体受火山-次火山机构控制,呈脉状、透镜状产出。流体包裹体岩相学、显微测温及激光拉曼显微探针分析表明:流体包裹体为气液两相或纯液相的水溶液,属NaCl-H2O体系;均一温度主要集中在180～260℃,盐度为在(0.2～12.5)wt%NaCl.eqv,密度为0.49～0.97 g/cm3,表现为低温、低盐度、低密度的特点。因此,加曼特金矿的矿床地质和成矿流体特征总体属于中低温热液脉状矿床,可能属于斑岩型与浅成低温热液型之间的过渡型。 |
| 关 键 词： | 加曼特金矿 矿床地质 流体包裹体 成因类型 天山 |
A study of ore geology and fluid inclusions of the Jiamante gold deposit, Nilka County, Xinjiang |
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| WU Yan-shuang,LI Nuo,WANG Li-jin,ZHOU Ke-f,MA Hai-jie.A study of ore geology and fluid inclusions of the Jiamante gold deposit, Nilka County, Xinjiang[J].Chinese Geology,2012,39(3):760-768. | |
| Authors: | WU Yan-shuang LI Nuo WANG Li-jin ZHOU Ke-f MA Hai-jie |
| Institution: | 1.College of Geology and Exploration Engineering,Xinjiang University,Urumqi 830046,Xinjiang,China;2.Key Laboratory of Orogen and Crust Evolution,Peking University,Beijing 100871,China;3.Xinjiang Institute of Geography and Ecology,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China;4.No.703 Geological Party,Xinjiang Geoexploration Bureau for Nonferrous Metals,Yining 835000,Xinjiang,China) |
| Abstract: | The Jiamante gold deposit in Nilka County of Xinjiang is hosted in a suite of intermediate-acidic lavas and pyroclastic rocks of the Lower Carboniferous Dahalajunshan Formation,and is controlled by a volcanic edifice,with ore bodies being in vein-like and lenticular forms.The ore minerals include chalcopyrite,galena,sphalerite,pyrite,limonite,stibnite,covellite,native gold and native silver,whereas the gangue minerals consist mainly of quartz,calcite,sericite and kaolinite.Ores assume euhedral and subhedral granular,emulsive,metasomatic and cataclastic textures.Colloidal,crustiform,comb,brecciated,banded and massive structures are commonly observed.Petrographic observation,microthermometric measurement and Laser Raman Spectrometry reveal that fluid inclusions in sphalerite and quartz are mainly two-phase and pure liquid phase aqueous ones,belonging to the NaCl-H 2 O system,and the homogeneous temperatures range from 180 to 260 ° C,with the salinities being 0.2-12.5 wt% NaCl.eqv,and the densities from 0.49 g/cm 3 to 0.97 g/cm 3.All these data show that ore-forming fluids are characterized by low temperature,low salinity and low density.Thus,the characteristics of ore-forming fluid system and ore geology of the Jiamante gold deposit suggest that the ore deposit is of the mesothermal to epithermal lode type,representing a transition from porphyry to epithermal mineralization. |
| Keywords: | Jiamante gold deposit ore geology fluid inclusion genetic type Tianshan Mountains |
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