河北涞源大湾锌钼矿床成矿地质条件

Analysis of Metallogenic Conditions of Dawan Zn-Mo Deposit of Laiyuan,Hebei Province

河北涞源大湾锌钼矿床位于太行山北段的山西断隆与燕山台褶带的结合部位。矿床围岩为五台群及长城系高于庄组和蓟县系雾迷山组。北北东、北西西向构造及顶垂体构造组成联合控岩控矿体系。成矿主要与流纹斑岩有关,热液蚀变与接触交代是流纹斑岩成矿作用的两个方面。通过分析锌钼矿床的地质特征,探讨矿床的成因,为寻找类似矿床提供依据。

The Dawan zinc molybdenum deposit in Hebei province is located in the combining site of Shanxi break in Taihang mountains north and yanshan platform fold belt.The surrounding rocks of this mineral deposit are Wutai Group,Gaoyuzhuang Formation of Changcheng System and Wumishan Formation of Jixian System.The structures of NNE and NWW ditections and the roof pendant structure make up the system of controlling diagenesis and mineralize.The deposit is related to rhyolite porphyry.Hydrothermal alteration and contact metasomatism are of the two aspects of rhyolitic porphyry mineralization.Through the analysis of zinc molybdenum deposit geological characteristics and discussing the causes of the deposit,we can provides some basis to look for the similar deposit.