【摘要】 河台金矿床赋存于河台韧性剪切带中,矿体严格受剪切带控制,矿石类型以糜棱岩型矿石为主,并有少量石英脉型矿石。矿床以富集Au,Ag,Se,S,As,Bi,Cu,Sb的元素组合为特征,Au/ag比值在2～10,同时W,Sn,U,Pb也有一定程度的富集。亲铁元素Sc,Ti,V,Cr,Mn,Co,Ni出现亏损;大离子亲石元素Rb,Cs发生富集,而sr、Ba、Y等出现亏损,同时REE元素也出现亏损,稀土元素组成以轻稀土富集为特征,∑LREE/∑HREE为5.1~11.53,∑REE在54.49×10-6～137.45×10-6之间,出现明显的Eu亏损,δEu在0.52~0.66之间。根据特征富集元素组合及元素含量向深部的变化趋势,推测矿床向深部的延伸仍具有很好的工业前景。更多还原

【Abstract】 Hetai gold deposit is hosted in ductile shear zones. The ore body is mainly composed of gold-bearing mylo-nites, and minor gold-bearing quartz veins. The deposit is characterized by the enrichment composition of Au, Ag, Se, S, Bi, Cu, Sb with a Au/Ag ratio of 2 ~ 3, less enrichment in W, Sn, U, and Pb. The deposit is also enriched in LILEs Kb and Cs, and depleted in LILEs Y, Sr and Ba, and siderophile elements Sc, Ti, V, Mn, Co, Ni, and REE. The deposit has light-enriched and obviously Eu-depleted pattern with a ratio of 5.1 ~ 11.53 between LREE and HREE. The contention trend of enrichment element composition in depths indicates a good industrial prospect of ore-body extension towards depth.更多还原