四川省理塘县日乃金矿床地质特征及控矿因素  

Geological characteristics and ore control factors in Rinai gold deposit in Litang county,Sichuan province

作　　者：李亮[1] 梁清玲[1] LI Liang;LIANG Qingling(Exploration Team 606 of Sichuan Metallurgical ＆Geological Exploration Bureau,Chengdu 611730,China)

机构地区：[1]四川省冶金地质勘查局六○六大队,成都611730

出　　处：《地质找矿论丛》2018年第4期573-579,共7页Contributions to Geology and Mineral Resources Research

摘　　要：四川省日乃金矿位于甘孜—理塘蛇绿混杂岩带的南段,区内中生代构造-岩浆活动强烈,发育上、下两套蛇绿岩,日乃金矿即赋存于上部的瓦能蛇绿岩组中,矿化带主要发育在区域性断裂次级的F6和F7之间的断裂破碎带中,矿化范围具有中-低温热液蚀变,形成3条金矿化带,矿体为脉状,长520~1120m,宽5.18~6.97m;矿体倾向NW,倾角40°~75°;矿石品位w(Au)=1.89×10^(-6)~3.77×10^(-6);矿石的主要含金矿物为黄铁矿和毒砂。根据金矿地质特征和主要控矿因素提出矿床的成因类型为与燕山晚期构造-岩浆活动有关的热液交代充填型金矿床,同时归纳了日乃金矿床的控矿因素。Rinai Au deposit is located in the south section of Ganzi Litang ophiolite belt. In the study area Mesozoic tectonism and magmatism is strong with the upper and lower ophiolite suit developed. The Au deposit occurs at the upper one and the mineralization zone at fractural zone between fault F6 and Fr which are sub faults of the regional fault. In scope of mineralization meso- epithermal alteration is developed and occur three mineralization zones. Ore bodies occur as veins, 520～1 120 mloang, 5.18～6.97 m wide dipping to NW at angle 40°～75°. Grade of the ore is1. 89×10-6～3.77×10-6. Pyrite andarsenopyrite are the ore minerals. Based on geological characteristics and ore control factors the deposit is a Late Yanshanian tectonism -magmatism -related hydrothermal fluid metasomatic filling Au deposit and the ore control factors point out.

关 键 词：日乃金矿 热液型金矿床 理塘蛇绿岩带 矿床成因 控矿因素 四川省 

分 类 号：P613[天文地球—矿床学] P618.51[天文地球—地质学]