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| 扬子地块西南缘铅锌矿床Cd、Ge与Ga富集规律初步研究 | |
| 引用本文： | 付绍洪,顾雪祥,王乾,李发源,章明.扬子地块西南缘铅锌矿床Cd、Ge与Ga富集规律初步研究[J].矿物岩石地球化学通报,2004,23(2):105-108. |
| 作者姓名： | 付绍洪 顾雪祥 王乾 李发源 章明 |
| 作者单位： | 1. 成都理工大学,地球科学学院,成都,610059；中国科学院,地球化学研究所,矿床地球化学开放研究实验室,贵阳,550002 2. 中国科学院,地球化学研究所,矿床地球化学开放研究实验室,贵阳,550002 3. 成都理工大学,地球科学学院,成都,610059 |
| 基金项目： | 国家自然科学基金(49872038)，中国科学院百人计划基金资助项目 |
| 摘 要： | 扬子地块西南缘分布着大量富含Cd、Ge与Ga的铅锌矿床，已成为我国Pb、Zn及Cd、Ge与Ga矿产资源的重要生产基地。对代表性铅锌矿床进行野外地质调查和系统采样鉴定后．应用电子探针微区分析手段，研究主要矿石矿物闪锌矿、方铅矿和黄铁矿中分散元素的富集特征。结果显示．各类矿床中闪锌矿均相对富集Cd，方铅矿富集Ge与Ga，而黄铁矿中Cd、Ge与Ga的富集系数均相对较低．未呈现出选择性富集的趋势；赋存于震旦纪一寒武纪地层且以脉状、网脉状产出的矿体中闪锌矿的Cd含量明显高于赋存于晚古生代并以层状产出的矿体中闪锌矿的Cd含量。 |
| 关 键 词： | 铅锌矿床 分散元素 富集规律 扬子地块 |
| 文章编号： | 1007-2802(2004)02-0105-04 |
| 修稿时间： | 2003年8月15日 |
A preliminary study on the enrichment regularity of dispersed elements in lead-zinc deposits in the SW margin of the Yangtze platform |
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| FU Shao-hong.A preliminary study on the enrichment regularity of dispersed elements in lead-zinc deposits in the SW margin of the Yangtze platform[J].Bulletin of Mineralogy Petrology and Geochemistry,2004,23(2):105-108. | |
| Authors: | FU Shao-hong |
| Institution: | FU Shao-hong~ |
| Abstract: | Many lead-zinc deposits in the SW margin of the Yangtze platform are characterized by the enrichment in dispersed elements,such as cadmium, germanium,and gallium.Enrichment characteristics of these dispersed elements in sphalerite, galena, and pyrite were delineated by electron microprobe analysis.Sphalerite has a high content of cadmium,while galena is characterized by enrichment in germanium and gallium. Pyrite contains cadmium, germanium and gallium on a lower level,with no selection for the elements. Cadmium contents in the sphalerite of the orebodies hosted in the Sinian and Cambrian strata and occurring as veins and stockworks are usually higher than those hosted in the late Mesozoic strata and occurring as layers or layer-like forms. |
| Keywords: | lead-zinc deposits dispersed element enrichment regularity Yangtze platform |
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