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| 煎茶岭金矿床控矿因素分析及找矿标志 | |
| 引用本文： | 佘岳峰,王瑞廷,陈荔湘,代军治,刘莉霞.煎茶岭金矿床控矿因素分析及找矿标志[J].矿产与地质,2008,22(6):487-491. |
| 作者姓名： | 佘岳峰 王瑞廷 陈荔湘 代军治 刘莉霞 |
| 作者单位： | 1. 西北有色测绘院,西安,710038 2. 西北有色地质勘查局地勘院,西安,710054 3. 西北有色地质勘查局711总队,陕西勉县,724212 |
| 摘 要： | 煎茶岭大型金矿床的形成受超基性岩的褪化蚀变、F1^45断裂及白云岩地层、超基性岩体控制。F1^45断裂及与其大角度相交的上、下盘次级断裂、裂隙系统是重要的控矿构造。结合该区找矿实践，分析认为其找矿标志包括：1）具有一定规模和多期活动特点的断裂挤压破碎带及其分枝断裂；2）以金为主的金、银、砷、汞、硼、镍、钻、铬、锰、锌多元素化探组合异常，特别是原生晕金、砷异常的较强部位；3）断裂带中见有蚀变白云岩带，蚀变组合为黄（褐）铁矿化、硅化、碳酸盐化、叶蛇纹石化、滑石化、铬云母化；4）含金背景值高的超基性岩体，超基性岩体内有后期的中酸性侵入岩，并使得超基性岩体遭受了强烈改造变质；5）有利于交代作用进行的碳酸盐岩等围岩；6）区域上长期的构造岩浆活动。煎茶岭地区仍具有较好的找矿潜力，这对于指导该地区进一步找矿并取得突破具有重要的现实意义。 |
| 关 键 词： | 煎茶岭 金矿床 控矿因素 找矿标志 控矿断裂 |
Ore-controlling factors and prospecting criteria of the Jianchaling gold deposit |
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| SHE Yue-feng,WANG Rui-ting,CHEN Li-xiang,DAI Jun-zhi,LIU Li-xia.Ore-controlling factors and prospecting criteria of the Jianchaling gold deposit[J].Mineral Resources and Geology,2008,22(6):487-491. | |
| Authors: | SHE Yue-feng WANG Rui-ting CHEN Li-xiang DAI Jun-zhi LIU Li-xia |
| Institution: | SHE Yue-feng, WANG Rui-ting, CHEN Li-xiang, DAI Jun-zhi, LIU Li-xia (1. Northwest Mapping Institution for Nonferrous Metals, Xi＇an 710038, China; 2. Geological Exploration Institution of Northwest Mining and Geological Exploration Bureau for Nonferrous Metals, Xi＇an 710054, China; 3. 711 Party of Northwest Mining and Geological Exploration Bureau for Nonferrous Metals, Mian County, Shannxi 724212, China) |
| Abstract: | The Jianchaling gold deposit is formed under the control of degradation alteration of ultrabasic rocks, F1^45 fault, dolomite strata and ultramafic rockbodies. F1^45fault and the secondary faults,fractures on the hanging wall and footwall which intersect F1^45 fault with big angle are significant ore-controlling structures. Combining with the prospecting practice in this area, it has concluded the following prospecting criteria after analysis ： 1） fault extruding fracture zone and its branch faults with scale to some extent and the characters of multistage activities; 2） multielement geochemical prospecting assemblage＇s anomalies including Au, Ag, As, Hg, B, Ni, Co, Cr, Mn, Zn and among which Au is the major one, especially the area with strong Au, As anomalies of primary halos;3） fault zones with altered dolomite rocks belt, whose alteration assemblage is pyritization（imonitization）, silification, carbonatization, antigritization, talcization and fuchsitization ; 4） ultrabasic rockbodies with high gold background value, which contain late intermediate-acid intrusion rocks that induced intensive reformation and metamorphism on ultrabasie rockbodies;5） carbonate wall rocks which were favorable to metasomatism;6） long-term tectonic magmatic activities in this area. A good prospecting potential is believed in the Jianchaling area, which will be very important and realistic to guide the further prospecting in this area. |
| Keywords: | Jianchaling gold deposit ore-controlling area prospecting criteria ore-controlling faults |
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