| 海城滑石矿田成矿地球化学及机理 |
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| 引用本文： | 吴永功,戚长谋,张培萍,刘婷婷.海城滑石矿田成矿地球化学及机理[J].吉林大学学报(地球科学版),2002,32(1):26-28. |
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| 作者姓名： | 吴永功 戚长谋 张培萍 刘婷婷 |
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| 作者单位： | 1. 吉林大学地球探测与信息技术学院,吉林,长春,130026
2. 吉林大学材料科学与工程学院,吉林,长春,130026 |
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| 摘 要： | 海域滑石矿矿石质量高，可满足各种工业用途的要求。微量元素含量、包裹体测量、同位素等资料表明矿田成矿物质镁、硅主要来自近矿围岩，成矿热液来自区域变质作用。据稀土元素分馏特征，滑石的成矿时代大约为早元古代末。在区域热动力变质作用过程中，受强应力作用，含有大量二氧化硅的高盐度热液使围岩中的菱镁矿被交代而生成滑石，而白云石很少参与滑石的形成。
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| 关 键 词： | 成矿地球化学 成矿机理 包裹体 成矿热液 滑石矿床 同位素 区域变质作用 |
| 文章编号： | 1671-5888(2002)01-0026-03 |
| 修稿时间： | 2001年3月1日 |
THE MINERALIZING GEOCHEMISTRY AND MECHANISM OF TALC IN HAICHENG MINE FIELD |
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| WU Yong gong ,QI Chang mou ,ZHANG Pei ping ,LIU Ting ting.THE MINERALIZING GEOCHEMISTRY AND MECHANISM OF TALC IN HAICHENG MINE FIELD[J].Journal of Jilin Unviersity:Earth Science Edition,2002,32(1):26-28. |
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| Authors: | WU Yong gong QI Chang mou ZHANG Pei ping LIU Ting ting |
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| Institution: | WU Yong gong 1,QI Chang mou 1,ZHANG Pei ping 2,LIU Ting ting 2 |
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| Abstract: | The high quality talc in Haicheng mine field can be used to many kinds of industry. The evidences of trace elements, inclusion temperature testing and isotope analysis show that the Mg and Si mainly derived from adjacent wall rock,and the mineralizing thermal fluid from regional metamorphism. The time of deposit forming is early Proterozic era by the evidence of REE fractionation. The magnesite in wall rock was replaced to talc by the thermal fluid with a great deal of SiO 2 and high salinity, under the effect of strong stress during regional metamorphism. However, the dolomite was hardly involed the process of talc forming. |
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| Keywords: | talc mineralizing geochemistry mineralizing mechanism |
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