河北省兴隆县花市钼矿地质特征及成因探讨

Geological characteristics and genesis of Huashi molybdenum mine,Xinglong county,Hebei province

近年来,冀东马兰峪复式背斜一带的钼矿找矿成果令人瞩目,本区已成为河北省重要的钼矿矿集区。众多证据显示区内钼矿化与燕山期花岗岩类侵入体关系十分密切,对花市钼矿地质特征和成矿阶段进行了总结和划分,阐述了花市钼矿床的主要控矿因素为多期岩浆侵入及构造活动产生的复杂节理裂隙,钼矿化主要以辉钼矿—石英脉形式或辉钼矿呈薄膜状、细脉状沿裂隙充填。分析认为花市钼矿床的成因类型为热液石英脉型。

In recent years,the molybdenum ore prospecting achievements in the area of Malanyu compound anticline in eastern Hebei are remarkable,and this area has become an important molybdenum ore concentration area in Hebei province.Many evidences show that molybdenum mineralization is closely related to Yanshanian granite intrusions.In this paper,the Huashi molybdenum mine geological characteristics and metallogenic stages were summarized and classified.Complex joints and fissures caused by multistage magmatic intrusion and tectonic activity were the main ore-controlling factors of Huashi molybdenum mine.Molybdenum mineralization was mainly in the form of molybdenite-quartz vein or molybdenite in the form of thin film and veinlets along the fracture.Comprehensive analysis suggested that the genetic type of Huashi molybdenum mine is hydrothermal quartz vein type.