河南桐柏地区刘山岩铜锌块状硫化物矿床地质特征研究  

Study on the Geological Characteristics for Liushanyan Cu-Zn Massive Sulfide Deposit in Tongbai District,Henan Province

作　　者：韩振林[1] 曲锦[1] 

机构地区：[1]河南省地质矿产勘查开发局第一地质勘查院,河南南阳473000

出　　处：《贵州大学学报（自然科学版）》2009年第3期67-71,共5页Journal of Guizhou University:Natural Sciences

摘　　要：刘山岩块状铜锌硫化物矿床产于寒武系二郎坪群刘山岩岩组的石英角斑岩-硅质岩中。矿体呈脉状和透镜状产出,受刘山岩韧-脆性断裂的控制,产状与地层基本一致,但品位和厚度变化较大。矿石矿物主要为闪锌矿、黄铁矿与黄铜矿,脉石矿物为石英、绢云母、重晶石和绿泥石。矿石具自形-半自形晶结构、它形晶结构、斑状结构,浸染状、块状和条带状构造。矿石结构构造特征和围岩蚀变特征都表明该矿床为火山-喷流型块状硫化物矿床。Liushanyan Cu-Zn massive sulfide deposit is hosted by quartz Liushanyan Formation of Erlang Group. The orebodies is characterized by ushanyan ductile-brittle fault. The orebodies is distributed approximately keratophyre and silicalite in Cambrian veins and lens and is controUed by Liparrallel to the Liushanyan Formation with variable ore grade and thickness. Ore minerals in orebodies is characterized by sphalerite, pyrite, and chalcopyrite and gangue minerals characterized by quartz, sericite, barite, and chlorite. Euhedral-subhedral, anhedral, porphyritic, disseminated textures, massive and banded structures are showed in orebodies. Both textures and alteration of the oreboides indicates that Liushanyan Cu-Zn massive sulfide deposit is a volcanic SEDEX deposit.

关 键 词：块状硫化物矿床 地质特征 刘山岩组 

分 类 号：P618.202[天文地球—矿床学]