广西金子岭地区锡铁矿床地质特征及找矿前景分析  

Geological characteristics of tin and iron deposits in Jinziling area,Guangxi and their prospecting perspectives

作　　者：徐文杰[1] 刘伟[1] 韩奎[1] 刘运锷[1] 

机构地区：[1]桂林矿产地质研究院,广西桂林541004

出　　处：《矿产与地质》2010年第6期523-527,共5页Mineral Resources and Geology

摘　　要：金子岭锡铁矿位于花山岩体北东的金子岭小岩体接触带,紧邻NW向与NE向构造断裂带。矿体赋存于中泥盆统郁江组泥岩、砂岩与岩体接触带中。在该地区南部及北部矿床类型为沉积改造型锡铁矿床,中部有含锡酸性岩脉及含锡矽卡岩脉出露,并达工业矿体。矿化带长约6Km,锡矿点3处,砂锡矿点1处,铁矿床(点)2处,化探次生晕Sn异常区2处。取样分析显示,粗粒花岗岩及后期细粒花岗岩含Sn、W极高,为成矿提供了丰富的物质来源。同时,花岗岩与围岩的挤压碎裂带及细粒花岗岩脉是主要找矿标志。因此该区成矿背景好、成矿条件有利,具有找矿潜力。Jinziling tin and iron deposit is located at the contact zone of Jinziling small rock bodies northeast of Huashan rock mass,adjacent to NW striking and NE striking fracture zone.Orebodies occur on the contact zone of middle Devonian Yujiang Group mudstone,sandstone with magmatic bodies.The deposit type in south and north part of the region is depositional transformed tin and iron deposit,while at the center there are tin bearing acidic magmatic dyke and tin bearing skarn vein which could be commercially used.Mineralized zone is about 6 kilometers long with 3 tin ore spots and 1 placer tin spot,2 iron deposits（spots）and 2 soil geochemical anomaly areas in it.Sampling result shows that coarser granitite and late fine grained granitite contain extremely higher Sn and W which provide enriched matter source for ore forming.Meanwhile,compressional crush zone and fine grained granitic dyke can be served as key prospecting indicators.The area therefore,holds excellent metallogenic background and favorable ore forming condition,and is promising for ore prospecting.

关 键 词：锡铁矿床 地质特征 找矿前景 金子岭 广西 

分 类 号：P618.44[天文地球—矿床学]