| 瞿泓滢,刘宏伟,裴荣富,李进文,王永磊.安徽铜陵狮子山铜矿田地球化学特征综述[J].地质找矿论丛,2011,26(3):239-248 |
| 安徽铜陵狮子山铜矿田地球化学特征综述 |
| Geochemical characteristic overview of the Shizishan ore-field at Tongling city,Anhui province, China |
| 投稿时间：2010-03-01 修订日期：2011-07-17 |
| DOI：10.6053/j.issn.1001-1412.2011.3. 001 |
| 中文关键词: 地质特征 流体包裹体 成矿作用 狮子山矿田 安徽省 |
| 英文关键词:geological characters fluid inclusions stable isotopes the Shizishan ore field Anhui province |
| 基金项目:中国地质调查局危机矿山项目“铜陵市凤凰山铜矿深部岩石地球化学找矿预测”(编号:200799093)资助 |
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| 中文摘要: |
| 安徽铜陵狮子山矿田是铜陵矿集区内储量最大的铜(金)矿田。矿田内矿床类型多样,成矿作用复杂,分布有东狮子山、西狮子山、大团山、老鸦岭、冬瓜山和花树坡等铜(金)矿床。这些矿床均围绕岩体产出,多数为隐伏矿,赋存于上石炭统-中三叠统的不同层位,在空间上具有明显的分带特征,由下向上依次为层控夕卡岩型、夕卡岩型和热液脉型矿床。其中,以前两种类型最为重要。矿田成矿经历了海西期和燕山期两个成矿期,燕山期为主要成矿期。中酸性侵入岩是狮子山矿田内铜矿床成矿物质的主要来源,主要岩浆岩为石英闪长岩、辉石二长闪长岩和花岗闪长岩。该矿田流体包裹体较丰富且均一,温度连续而集中,表明成矿作用的连续性和成矿温度的连续变化以及矿田成矿作用的多期次性、多阶段性。成矿流体主要来自于岩浆水,可能混有少量的大气降水,成矿流体是从深部向浅部、从岩体向远处以近等温状态快速输运。 |
| 英文摘要: |
| Shizishan is the largest Cu-Au ore-field in the Tongling area,Anhui province.A variety of Cu-Au deposits with complex metallogeny,such as Dongshizishan,Xishizishan,Datuanshan,Laoyaling,Dongguashan and Huashupo occur mostly as blind ore bodies in Upper Carboniferous to Middle Triassic strata surrounding the granitic intrusion.The deposits are characterized by spatial zonation: stratabound skarn type at low level,upward skarn type and hydrothermal vein type.The two skarn types are economically important.Mineralization of the Shizishan ore-field is related to Hercynian and Yanshanian magmatism but Yanshanian mineralization dominant.The intermediate-acid intrusions are the main sources of the metals of the Cu deposits.Quartz diorite,pyroxene monzodiorite and granodiorite are the main magmatic rocks.The ore field is abundant with fluid inclusions and the inclusions are uniformly distributed with continuous and concentrate homogenization temperatures in a wide range,indicating a continous change in temperature of the multi-stage mineralization.The ore fluids are dominantly of magmatic water icorporated with minor meteoric water.The ore fluids ascended and spreaded rapidly under isothermal conditions. |
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