河南省西峡县石门沟钼矿床地质特征及成因探讨  

The Geological Features and Genetic Analysis of Shimengou Molybdenite Deposits from Xixia County, Henan Province

作　　者：王瑞良[1] 王长永[1] 汤清龙[1] 

机构地区：[1]河南省地质矿产勘查开发局第一地质勘查院,河南郑州450001

出　　处：《资源导刊（地球科技版）》2013年第11期12-14,共3页

摘　　要：本文着重论述了河南西峡县石门沟钼矿成矿模式与成因机理，认为石门沟辉钼矿化二长花岗岩是下地壳物质部分熔融作用形成的富含Mo元素的花岗质岩浆，遵循由基性向酸性正向演化的规律，后又经历了岩浆结晶分异、同化混染作用，Mo（W）等金属矿物以熔离状态分布在岩浆矿房中。当岩浆热液沿构造薄弱带上升到地壳浅部，岩浆冷凝，富水热流体分离，进入气成热液阶段，形成高中温纵横交错含钼脉体或含钼花岗岩体。初步认定，石门沟钼矿成因类型为岩浆热液充填型及石英脉型辉钼矿床。The metallogenic model and genetic analysis of Shimengou molybdenite deposit in Xixia County are mainly discussed in the paper. The monzonitic molybdenite granite originated from incomplete melting lower crustal material, which was rich in molybdenum and was in conformity with the law of magmatic evolution-- from mafic to acidic. Later, as a result of magmatic crystallization differentiation and assimilation, the metallic elements, such as molybdenum and tungsten, in the state of liquation, remained in the magma chamber. When the magma intruded into the upper crust through structural fracture zones, with the magma condensation and aquiferous fluid emanation, it was in the process of pneumato-hydrothermal phase, and finally formed crisscross molybdenite quartz veins and granite. Genetic types of Shimengou Molybdenite deposits are preliminary regarded as the magmatic hydrothermal filling type and quartz vein type molybdenite deposits.

关 键 词：辉钼矿 二长花岗岩 成矿模式 成因机理 

分 类 号：P611[天文地球—矿床学]