小秦岭东闯铅、金矿床流体包裹体地球化学特征  

GEOCHEMICAL FEATURES OF FLUID INCLUSIONS OF DONGCHUANG Pb Au DEPOSIT IN XIAOQINLING

作　　者：李绍儒[1] 李强之[1] 李文良 郭晓东 

机构地区：[1]河北廊坊黄金地质研究所

出　　处：《黄金地质》1997年第4期21-28,共8页Gold Geology

摘　　要：东闯铅、金矿床是一大型石英脉型矿床。依据实际的观察、测试结果，论述了矿床的矿物流体包裹体地球化学持征，认为成矿溶液为Ｈ２Ｏ－ＣＯ２－ＮａＣｌ体系，富含Ｈ２、Ｎ２、ＣＯ、ＮＨ３、Ｈ２Ｓ、ＣＨ４及其他烃类气体，矿液呈弱酸性—弱碱性、还原条件、氧逸度低、温度高，矿液进入断裂扩容部位后发生的不混溶现象对矿质的沉淀有着重要影响，是一高温深成热液矿床。Dongchuang Pb Au deposit is a large quartz vein type deposit.From the study of fluid inclusions,it is coneluded:ore forming fluid belongs to H 2O CO 2 NaCl system,rich in H 2,N 2,CO,NH 3,H 2S,CH 4 and other hydrocarbon gases,with poorly acid weakly ,reduced condition,low oxygen fugacity,high temperture.Immiscibility occured affer ore fluid filled into flash parts of fault play a important role to ore forming element precipitation.The deposit is a high temperture plutonogenic hydrothermal deposit.

关 键 词：金矿床 地球化学 液包体 铅矿床 热液成矿 

分 类 号：P618.420.4[天文地球—矿床学] P618.510.4[天文地球—地质学]