福建福安赤路钼矿床地质特征及成矿模式探讨  

Discussion on Geological Characteristics and Metallogenic Mode

作　　者：林国珍[1] Lin Guozhen(The Forth Geologic Party of Fujian Province,Ningde,352100)

机构地区：[1]福建省第四地质大队,宁德352100

出　　处：《福建地质》2023年第1期24-31,共8页Geology of Fujian

摘　　要：福安赤路钼矿产于燕山晚期第四次侵入似斑状中细粒花岗岩及晚侏罗世赤水组上段流纹质晶屑凝灰熔岩接触带上,内带矿体呈似层状、透镜状,外带矿体呈脉状。区内花岗岩是在早白垩世中酸性-酸性系列岩浆喷发之后,在燕山晚期第四次入侵,经长期分异演化的超酸性花岗岩;钼矿的成矿时间在花岗岩形成之后,正长斑岩形成之前。综合分析矿床成矿地质背景和地质特征,认为该矿床为岩浆期后中高温热液型。Fu’an Chilu molybdenum ore is produced in the contact zone of the fourth granular granular granite in the late Yanshan period and the upper section of the late Jurassic Chishui Formation.The inner band ore body is layered and lens-shaped,and the outer belt ore body is pulse-shaped.The granite in the area is a super-acidic granite that evolved for the fourth time in the late Yanshan period after the eruption of acid-acidic series of magma in the early Cretaceous.The mineralization time of molybdenum ore is before the formation of normal porphyry after granite formation.The geological background and geological characteristics of the deposit are considered as medium-high temperature hydrothermal type after magmatic period.

关 键 词：钼矿床 地质特征 成因探讨 成矿模式 福安赤路 

分 类 号：P618.65[天文地球—矿床学]