| 四川大岩子铂-钯矿床(点)热液成矿的地球化学证据 |
| |
| 引用本文： | 成杭新,赵传冬,庄广民,刘英汉,张勤,赵支岗.四川大岩子铂-钯矿床(点)热液成矿的地球化学证据[J].地球学报,2005,26(4):337-342. |
| |
| 作者姓名： | 成杭新 赵传冬 庄广民 刘英汉 张勤 赵支岗 |
| |
| 作者单位： | 中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000;中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000;中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000;中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000;中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000;攀西地质大队,四川西昌550004 |
| |
| 基金项目： | 国土资源地质调查项目（编号：200310200002）;国土资源部“九五”一般科技项目（编号：992034） |
| |
| 摘 要： | 大岩子铂-钯矿区的岩石有白云岩、辉石岩脉、辉绿岩脉，矿体赋存在构造蚀变破碎带中，以外接触带的白云岩一侧为主，次为内接触带的辉石岩，矿石类型有矿化白云岩和矿化辉石岩两种类型。通过对含矿白云岩、含矿辉石岩、断层泥及辉绿岩的地球化学特征研究，认为大岩子矿床先后经历超基性岩浆的侵入，即形成辉石岩脉；基性岩浆的侵入，即形成辉绿岩脉；富含Pt、Pd的岩浆期后热液活动，即形成以Pt、Pd为丰、富含As、Cu、Sb、Ag、Cd的热液矿床，其中Pt、Pd的富集成矿主要与热液活动有关。
|
| 关 键 词： | Pt-Pd矿床 热液成矿 地球化学证据 大岩子 |
Geochemical Evidence for Hydrothermal Mineralization of the Dayanzi Pt-Pd Deposit in Huili County, Sichuan Province |
| |
| CHENG Hang-xin,ZHAO Chuan-dong,ZHUANG Guang-min,LIU Ying-han,ZHANG Qin and ZHAO Zhi-gang.Geochemical Evidence for Hydrothermal Mineralization of the Dayanzi Pt-Pd Deposit in Huili County, Sichuan Province[J].Acta Geoscientia Sinica,2005,26(4):337-342. |
| |
| Authors: | CHENG Hang-xin ZHAO Chuan-dong ZHUANG Guang-min LIU Ying-han ZHANG Qin and ZHAO Zhi-gang |
| |
| Institution: | Institute of Geophysical and Geochemical Exploration, CAGS, Langfang, Hebei, 065000;Institute of Geophysical and Geochemical Exploration, CAGS, Langfang, Hebei, 065000;Institute of Geophysical and Geochemical Exploration, CAGS, Langfang, Hebei, 065000;Institute of Geophysical and Geochemical Exploration, CAGS, Langfang, Hebei, 065000;Institute of Geophysical and Geochemical Exploration, CAGS, Langfang, Hebei, 065000;Panxi Geological Party, Xichang, Sichuan, 550004 |
| |
| Abstract: | The rocks in the Dayanzi Pt-Pd deposit are mainly dolomitite as well as pyroxenite and diabase veins. The orebodies occur in the tectonic altered and shattered zone between the dolomitite and the pyroxenite vein, mostly on the dolomitite side of the exocontact zone and subordinately in pyroxenite of the endocontact zone. As a result, there exist two types of ores: mineralized dolomitite and mineralized pyroxenite. According to geochemical characteristics of mineralized dolomitite, mineralized pyroxenite, diabase and fault gouge,it is considered that the formation of the Dayanzi Pt-Pd deposit experienced ultra-mafic magmatic intrusion (forming pyroxenite), mafic magmatic intrusion (forming diabase) and postmagmatic hydrothermal activity (forming Pt-Pd hydrothermal deposit), resulting in the formation of Pt-and Pd-bearing ore minerals rich in As, Cu, Sb, Ag and Cd. Pt and Pd mineralization is rela-ted to the postmagmatic hydrothermal activity. |
| |
| Keywords: | Pt-Pd deposit hydrothermal mineralization geochemical evidence Dayanzi Sichuan |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《地球学报》浏览原始摘要信息 |
| 点击此处可从《地球学报》下载免费的PDF全文 |
|
