西藏日土地区弗野玢岩铁矿的地质特征及找矿意义  

Geological characteristics of the Fuye porphyrite iron deposit, Rutog County, Tibet, China and its significance for iron prospecting

作　　者：冯国胜[1] 陈振华[2] 廖六根[2] 肖业斌[2] 

机构地区：[1]中国地质大学资源学院,湖北武汉430074 [2]江西省地质调查研究院,江西南昌330030

出　　处：《地质通报》2007年第8期1041-1047,共7页Geological Bulletin of China

基　　金：中国地质调查局国土资源大调查项目(编号:200313000013)资助。

摘　　要：以西藏1∶25万羌多幅区域地质调查成果为基础,论述了日土县弗野铁矿的地质特征,并对其成因、找矿意义等进行了初步讨论。弗野岩体是一个以闪长玢岩为主的杂岩体,主要岩性为辉石石英闪长玢岩、花岗闪长玢岩、石英闪长玢岩。成矿围岩主要为大理岩。控矿因素主要有地层、构造、岩浆岩。铁矿成因属玢岩型。该铁矿主要产于岩体与围岩的外接触带及大理岩中,矿体呈脉状、透镜状。该铁矿的发现为在班公湖-怒江结合带两侧寻找富铁矿提供了新的线索。On the basis of the regional geology investigation of the 1：250000 Qangdoi Sheet, this paper deals with the geological characteristics of the Fuye porphyrite iron deposit in Rutog County and preliminarily discusses its genesis and significance for iron prospecting. The Fuye rock mass is a complex composed mainly of diorite porphyrite, mainly including pyroxene-quartz diorite-porphyrite, granodiorite-porphyrite and quartz diorite-porphyrite. Its host rocks are mainly marble and its ore-controlling factors largely include strata, structure and magmatic rocks. According to the genetic classification, the iron deposit belongs to the porphyrite type. It mainly occurs in the exocontact zone between the intrusion and its host rocks and marble. The orebodies occur as veins or lenses. The discovery of the iron deposit furnishes a new clue to looking for iron-rich deposits at both sides of the Bangong Co-Nujiang junction zone.

关 键 词：地质特征 玢岩铁矿 找矿意义 西藏日土地区 

分 类 号：P618.31[天文地球—矿床学]