吉林四平三家子钨矿床闪长玢岩脉与钨矿化关系探讨

Discussion on the relation between diorite-porphyrite dike and tungsten mineralization of Sanjiazi tungsten deposit in Siping of Jilin

四平三家子钨矿床是近年来在东北地区发现的一个矽卡岩型白钨矿矿床。矿区内脉岩发育,闪长玢岩脉空间上控制着钨矿体的产出,与钨矿化空间关系密切,是该区重要的找矿标志。该闪长玢岩为成矿前脉岩。结合闪长玢岩、成矿花岗岩体以及钨矿石的微量元素、稀土元素分析,认为三家子钨矿区内的闪长玢岩脉与成矿花岗岩体、钨矿石主要微量元素含量具有一定的相似性,稀土元素组成具有可比性,成因上应属同源关系。

Sanjiazi deposit is a skarn scheelite mineral deposit newly found in Northeast China.The dikes developed well in mining area,in which the diorite-porphyrite dike controlled the outcrop of tungsten ore body in space with close relation to tungsten mineralization,which is one of the important indicators for tungsten prospecting in this area.The diorite-porphyrite generated prior to scheelite mineralization.Compared with the trace elements and REE of the dike,granite body and scheelite ore,the conclusion can be drawn that the diorite-porphyrite has similarity with granite body and scheelite ore in main trace elements contents and comparability in REE contents,and belongs to homologous relationship in origin.