西藏西部日土县材玛铁多金属矿地质特征及找矿意义  

Geological characteristics of the Caima iron-polymetallic deposit,Rutog County,western Tibet, China, and its significance for mineral prospecting.

作　　者：冯国胜[1] 廖六根[1] 陈振华[1] 肖志坚[1] 

机构地区：[1]江西省地质调查研究院,江西南昌向塘330201

出　　处：《地质通报》2006年第1期267-272,共6页Geological Bulletin of China

基　　金：中国地质调查局<1:25万日土县幅区域地质调查>项目(编号:基[2002]002-21;编码:200213000008)资助。

摘　　要：以1∶25万日土县幅区域地质调查成果为基础,论述了日土县材玛铁多金属矿的地质特征,并对其成因、找矿意义等进行了初步的讨论。结合尼雄铁矿及邻区找矿成果对比分析,认为白垩纪为西藏重要的富铁矿成矿期。材玛铁多金属矿是岩浆期后中低温热液矽卡岩型交代-充填矿床,该矿主要产于围岩(大理岩)中,矿体呈脉状、透镜状。该矿的发现为班公湖-怒江结合带两侧富铁矿找矿打开了一个窗口。On the basis of the 1：250000 regional geological survey of the Rutog County Sheet, this paper deals with the geological characteristics of the Caima iron-polymetallic deposit, Rutog County, and pre＇hminarily discusses its genesis and significance for mineral prospecting. According to the restdts of this survey, combined with a comparative study of the restdts of mineral prospecting in the Nyixung iron deposit and its neighboring areas, the authors believe that the Cretaceous Period was an important metaUogenic epoch for rich iron deposits in Tibet. The Caima iron-polymetallic deposit is a postmagmatic, meso- and epithermal, skarn type metasomatic-cavity filling deposit. It mainly occurs as veins and lenses in marble. The discovery of the ore deposit has opened a window for prospecting for high-grade iron deposits on both sides of the Bangong Co-Nujiang junction zone.

关 键 词：铁多金属矿 地质特征 找矿意义 西藏日土县 

分 类 号：P618.31[天文地球—矿床学]