西藏亚桂拉矽卡岩型铅锌矿床地质特征与成因分析  

The Geologic Characteristic and Genesis of Yaguila's Skarn-related Lead-zinc Ore Deposit,Tibet,China

作　　者：宋梦莹[1] 钟康惠[1] 刘清双[1] 陈莉莉[1] 姚丹[1] 

机构地区：[1]成都理工大学地球科学学院,四川成都610059

出　　处：《四川有色金属》2014年第1期48-51,共4页Sichuan Nonferrous Metals

摘　　要：亚桂拉矽卡岩型铅锌矿床位于龙马拉-亚贵拉铅锌多金属成矿带中东部,门巴-多其木断裂北侧,矿区出露的地层为中二叠统下拉组一段(P2x1),岩性主要为砂质板岩、变石英砂岩等,为赋矿地层;出露的岩浆岩主要为燕山晚期黑云母花岗岩(γ53)-石英斑岩(λπ53),为成矿提供热能和成矿物质。矿区发育三条近平行排列的北东向断裂破碎带(F1、F2、F3),具多期活动性特点。本文通过介绍区域地质背景、矿区地质特征和成矿时代,初步分析了亚桂拉矽卡岩型铅锌矿床的成因,建立了成矿模式,认为该矿床属于矽卡岩型矿床。The Yaguila＇s skarn-related lead-zinc ore deposit lies in the mid-east of Longmala-Y aguila lead-zinc polymetallic ore-forming belt, the north of Menba-Duoqimu fault. The exposure strata in the mining area are the first section of Xiala formation, mid-Permian （P2xl）, The lithology is mainly sandy slate are meta--quartzose sandstone and they are the host strata. The exposure magmatic rocks are mainly biotite granite （＇ys3） - quartz porphyry （k＇rr53）of late Yanshan movement, which provide thermal energy and minerogenetie materials for the formation of ore deposit. In the mining area there develops three subparallel north-east fault fractured belt（Fl,F2, F3）which features in muhiphasie activity. In this paper, based on the regional geologic background, the geologic characteristic of the mining area and the metallogenic epoch, the genesis of the Yaguila＇s skarn-related lead-zinc ore deposit is analyzed and the metallogenic model is established and concludes that it is the skarn-related type deposit.

关 键 词：亚桂拉铅锌矿 地质特征 矽卡岩型 成矿模式 

分 类 号：P618[天文地球—矿床学]