邯郸娄里金矿床原生晕垂向分带特征研究  

The characteristics of vertical primary halo zoning in the Louli gold deposit,Handan City,Hebei Province

作　　者：李随民 李玉成[2] 韩玉丑[3] 孔令海[2] 赵淑梅[2] 王京涛[2] 王俊革 LI Sui-min LI Yu-cheng HAN Yu-chou KONG Ling-hai ZHAO Shu-mei WANG Jing-tao WANG Jun-ge(Hebei Geological University, Shijiazhuang 050031, Hebei, China No. 1 Geological Party, Hebei Geological ExplorationBureau, Zhangjiakou 075000, Hebei, China Hebei Bureau of Geology and Mineral Exploration and Development, Shijiazhuang050081, Hebei, China)

机构地区：[1]河北地质大学,河北石家庄050031 [2]河北省地矿局第一地质大队,河北邯郸075000 [3]河北省地矿局,河北石家庄050081

出　　处：《中国地质》2016年第5期1637-1644,共8页Geology in China

基　　金：河北省国土资源厅基金项目(2012055548和2013045650)联合资助~~

摘　　要：娄里金矿位于邯郸洪山杂岩体北侧的火山凝灰岩中。该类型金矿在太行山南段为首次发现,其成矿规律和深部成矿潜力的研究对圈定成矿远景区及增加矿山资源量有重要的指导意义。据此系统采集了矿区ZK11-2和ZK16-1钻孔岩心样品,在分析区域成矿地质规律和矿床地质特征的基础上,采用格里戈良分带指数法和广义衬值法两种方法计算了元素垂向分带序列,结果显示不同方法虽在元素排列顺序上存在一定差异,但在反映热夜活动期次及元素空间叠加模式上基本相同。两个钻孔中均出现了明显的"前尾晕共存"及"反向分带"现象。在此基础上结合微量元素垂向变化规律,分析了区内金矿体形成的热夜活动过程。研究表明两个钻孔的垂向分带都由两个完整的小循环组成,说明区内金矿体的形成至少经历了两次热夜活动叠加。The Louli gold deposit is located on the northern side of Hongshan alkalic complex, and the host rock of the orebody isthe volcanic tufa. This is the first ore deposit of such type found in volcanic tufa in the southern segment of the Taihang Mountain,and its metallogenic regularity and deep metallogenic prospect evaluation are of guiding significance for delineating potentialprospective areas and increasing mineral resources. Based on the regional mineralization regularity and geological characteristics,the authors systematically collected rock samples in 2 drill holes, and used Gregorians zonality index method and generalized contrast value method to compute and determine vertical zoning sequence of indicator elements. The results show that differentcalculation methods may produce somewhat different element orders, but the active stages of hydrothermal fluid and spatialsuperposition mode of halos are identical. The computed result of two drill holes shows the obvious coexistence of frontal halo andtail halo and axial zoning characteristics. The active process of hydrothermal fluid was analyzed based on the trace elementsgeochemical parameter axial variation. The results obtained show that the vertical zoning of two drill holes are made up of two stagehydrothermal circulation, suggesting that the formation of gold deposit is of multi-stage characteristics.

关 键 词：原生晕 垂向分带 金矿 娄里 

分 类 号：P632.2[天文地球—地质矿产勘探] P618.51[天文地球—地质学]