| 江西冷水坑铅锌银矿田成矿系统与成矿模式 |
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| 引用本文： | 肖茂章.江西冷水坑铅锌银矿田成矿系统与成矿模式[J].地质与勘探,2014,50(2):311-320. |
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| 作者姓名： | 肖茂章 |
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| 作者单位： | 江西地质矿产勘查开发局912地质大队，江西鹰潭；江西核工业地质局265地质大队，江西鹰潭 |
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| 摘 要： | 江西冷水坑矿田具有浅部斑岩型矿体与深部层状矿体的复杂组合。深部的层状矿体曾被长期认为是受构造破碎带控制的"层控叠改型矿体",与斑岩型矿体同期形成。本文从矿床的基本地质特征入手,论述和分析了层状银铅锌矿体所具有的火山碎屑建造及成矿特点,认为矿床具有三期成矿特点,层状矿体属火山机构控制的以火山集块-角砾岩层为赋矿岩石的火山喷发-沉积成岩矿体。提出了该矿床火山构造-岩浆喷发成矿系统的主要成矿要素和成矿模式,斑岩岩浆就位及其流体活动,在产生大规模斑岩型矿化的同时,对早期的火山沉积碳酸盐层进行叠加改造而形成了与斑岩具有成因联系的层控铅锌银矿床。
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| 关 键 词： | 层状铅锌银矿体 火山喷发-沉积成矿 成矿系统 江西冷水坑 |
| 收稿时间： | 4/1/2013 12:00:00 AM |
| 修稿时间： | 2013/9/26 0:00:00 |
The metallogenic system and metallogenic model of the Lengshuikeng Pb-Zn-Ag orefield, Jiangxi Province |
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| Xiao Mao-zhang.The metallogenic system and metallogenic model of the Lengshuikeng Pb-Zn-Ag orefield, Jiangxi Province[J].Geology and Prospecting,2014,50(2):311-320. |
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| Authors: | Xiao Mao-zhang |
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| Institution: | No. 912 Geological Party, Jiangxi Bureau of Exploration and Development for Geology and Mineral Resources, Yingtan; No.265 Geological Party, Jiangxi Nuclear Industry Geological Bureau, Yingtan |
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| Abstract: | Abstract: The Lengshuikeng orefield in Jiangxi Province owns a complex combination of shallow porphyry orebodies and deep stratiform orebodies. The deep layered orebodies have long been regarded as strata-bound orebodies with superimposed deformation controlled by tectonic fracture zones, and formed with porphyry orebodies of this area during the same period. This paper studies the basic geological characteristics of the deposit, and analyzes the pyroclastic formations and mineralization characteristics of the layered Ag-Pb-Zn orebodies. The result shows that the deposit has metallogenic features with their different periods, and the layered orebodies belong to volcanic eruption-diagenesis orebodies with ore-bearing rocks of volcanic block-breccia layer controlled by volcanic edifices. We also present the main ore-forming elements and the metallogenic model of the mineralization system. The porphyry magma emplacement and its fluid activity superimposed the early volcanic sedimentary carbonate layers, and then formed the layered Ag-Pb-Zn deposit with a genetic link with porphyry when they produced a large scale porphyry-type mineralization. |
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| Keywords: | layered Ag-Pb-Zn orebody volcanic eruption-sedimentary mineralization metallogenic system Lengshuikeng Jiangxi |
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