摘要
河南省嵩县小南沟金矿是产于熊耳群火山岩中的构造蚀变岩型矿床,矿化受控于近南北向断裂构造,工业矿体主要产于其中NE 向的含矿断裂中。系统的矿床地质地球化学研究发现, 矿体横剖面和纵剖面上都存在明显的元素分带。纵投影剖面的地球化学反映出Au 、Ag 、Cu 、Pb 、Zn 、As 、Sb 和W 等元素均形成向上开口的“U”形,含量上高下低,向深部晕的规模逐渐减小,强度减弱,垂向上具有尾晕的地球化学特点。与Au 有关的元素以及热晕均显示出矿化主要集中于11 线以北及57 线以南地区,矿化富集地段集中于9~12 线多组断裂交汇部位。矿体向北侧伏,其原因是多组断裂的交汇部位形成一个向北侧伏的有利成矿空间。
Xiaonangou alterative type gold deposit occur in the Precambrian volcanic rocks, located in Song Xian ,Henan Province. The ore bodies occurred in the fault along NE. The studies of geology and geochemistry suggest that there are element zoning profile in the different direction. The geochemical characteristics of longitudinal profile show that the iso contents shapes of Au,Ag,Cu,Pb,Zn,As,Sb,W are “U” type, and the contents become lower from upper lever to lower, and like as “rear halo”. The geochemistry of elements related to gold and hydrothermal aureole show that important mineralization is occurred in the area of north of line 11 and south of line 57, the richer ore bodies are formed in the cross of different faults in line 9~12. The ore body is side pitch along north. The ore forming fluid came from north.
出处
《地球化学》
CAS
CSCD
北大核心
1999年第4期318-326,共9页
Geochimica
基金
国家黄金局研究项目