黑龙江宝兴沟金矿床化探异常特征及控矿因素分析

黑龙江省塔河县宝兴沟岩金矿区位于大兴安岭北端、上黑龙江前陆盆地南缘,是武警黄金部队继上黑龙江前陆盆地北缘发现砂宝斯大型岩金矿床之后,在该盆地南缘发现的又一具有较大找矿潜力的岩金矿床。该区有望的化探异常组合为Au、Ag、As、Sb、Cu、Pb,元素组合特征反映本区成矿经历了多期、多阶段热液活动,对成矿极为有利。本区金矿床的控矿因素有3点:中侏罗统二十二站组提供了主要成矿物质、NE向构造破碎带为成矿流体运移通道及赋矿有利部位、斑岩体提供了充足的成矿流体、热源及部分成矿物质。

Analysis of Geochemical Anomaly Characteristics and Ore-controlling Factors for Baoxinggou Gold Deposit in Heilongjiang Province

Baoxinggou gold deposit is in Tahe County,Heilongjiang Province,located on the north of Daxing’anling and south margin of upper Heilongjiang Foreland Basin,It is another rock-gold deposit with greater potentiality,after Shabaoshi rock-gold deposit,which located on the north margin of the basin.The probable geochemical anomaly combination is Au,Ag,As,Sb,Cu and Pb.The characteristics of element combination reveals that the miner-alization in the area has underwent multi-epoch and multi-phase hydrothermal activities,being favorable to the ore-formation.The ore-controlling factors for this deposit：ore-forming material derived mainly from Ershierzhan Formation of Middle Jurassic,NE-trending structures fracture belt is pathway for migration of the mineralizing fluid and favorable position for ore-bearing,porphyry bodies provided enough ore-forming fluid,thermal source and part-ly metallogenic material.