黑龙江省大新屯锑金矿床矿物学特征及Au-Sb化合物的发现  

Characteristics of the Mineralogy and Discovery of Two New Au-Sb Compounds in the Daxintun Antimony-Gold Deposit,Heilongjiang Province

作　　者：全少龙 许虹[1] 张德森[1,3] 高燊[1] 徐楠[1] 陈星辉 QUAN Shao-long XU Hong ZHANG De-sen GAO Shen XU Nan CHENG Xing-hui(School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China Xi＇an Institute of Geological And Mineral Exploration Xi＇an 710100, China Tianjin geothermal Exploration and Development-Designing Institute, Tianjin 300250, China)

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]西安地质矿产勘查开发院,西安710100 [3]天津地热勘查开发设计院,天津300250

出　　处：《矿物岩石地球化学通报》2016年第5期994-1007,共14页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：中国地质调查局地质项目(12120113015100;1212011121083)

摘　　要：为查明黑龙江省大新屯锑金矿床的成因、为找矿工作提供一些理论依据，对矿床中金、矿物开展了电子探针、X射线粉晶衍射和流体包裹体测温分析测试。结果表明，矿床中含金矿物以自然金为主，可见极少的针碲金银矿和碲金银矿；研究发现了2种新的 Au-Sb化合物（Au2Sb3和 Au0.9Sb0.1，疑似新矿物），其粒度极小（2～4μm）、含量极低、与自然金共生。锑矿化晚于金矿化，矿床中的含锑矿物以辉锑矿为主，有微量的硫锑铅银矿、块硫锑铜矿、硫锑铅矿、黝锑银矿。金在后期形成的含锑硫化物中含量较低。研究表明，成矿过程分为石英-金属硫化物阶段、石英-黄铁矿-金矿化阶段、石英-辉锑矿矿化阶段和石英-碳酸岩阶段4个矿化阶段。In order to understand the genesis of the Daxintun antimony-gold deposit in Heilongjiang Province and provide a theoretical basis for prospecting work,the characteristics of the main ore minerals were performed through scanning elec-tron microscope（SEM）,energy dispersive spectrometer（EDS）,electron probe micro-analyze（EPMA）,X-ray powder dif-fraction（XRD）and fluid inclusion analysis.Gold mainly occurs as native gold,while a small amount of Au is hosted in sylvanite and petzite.Additionally,two new compounds,Au2Sb3 and Au0.9Sb0.1,are discovered in this study.Such new Au-Sb compounds are irregular small grain（2-4μm）which are associated with native gold.The timing of antimony miner-alization is later than that of gold mineralization.Antimony occurs dominantly in the form of stibnite,while small amounts of Sb formed andorite,famatinite,boulangerite and freibergite.Gold is poor in later-formed antimony-bearing sulfide min-erals.It is,therefore,concluded that this deposit is mainly formed in four stages,including quartz-sulfide,quartz-pyrite-gold（gold mineralization）,quartz-stibinite（antimony mineralization）and quartz-carbonate stages.

关 键 词：Au-Sb化合物 针碲金银矿 碲金银矿 辉锑矿 黑龙江省 

分 类 号：P618.51[天文地球—矿床学]