冀北斑岩-浅成低温热液型多金属成矿系统  

Porphyry-Epithermal Polymetallic Metallogenic System in Northern Hebei Province

作　　者：李随民 韩玉丑[2] 魏明辉[3] 韩腾飞 孙志伟 

机构地区：[1]河北地质大学,石家庄050031 [2]河北省地矿局,石家庄050081 [3]河北省地矿局第三地质大队,河北张家口075000 [4]河北省地质调查院,石家庄050081

出　　处：《地质科技情报》2016年第4期139-143,共5页Geological Science and Technology Information

基　　金：河北省国土资源厅基金项目(2012055548;2013045650)

摘　　要：已有的科研成果和勘查资料均显示,冀北地区铜钼铅锌银多金属矿床及部分金矿床具一定的分带性,铜钼多金属矿床多靠近岩体,形成斑岩型或矽卡岩型铜钼多金属矿床,铅锌银多金属矿床多呈热液脉状分布在岩体外围。两类矿床在成矿物质和成矿流体的来源上均与酸性岩体关系密切,构成一个完整的斑岩-浅成低温热液型成矿系统。以冀北地区勘查程度较高的蔡家营、贾家营、北岔沟门和小寺沟等大中型矿床为例,说明了斑岩-浅成低温热液型成矿系统在冀北地区存在的普遍性。据此提出,应改变过去以单一脉状铅锌银矿为目标的勘查模式,以斑岩-浅成低温热液型矿床勘查模式代之,重新考虑和审视以前地质工作中忽略的含矿斑岩体或脉状浅成热液多金属矿床的外围及深部成矿潜力。Research results and exploration achievements have shown that molybdenum, copper, lead, zinc and silver polymetallie deposit, including some gold deposits, are closely associated with intermediate-acid intrusive bodies of Yanshan Period in northern Hebei Province. There is a distinct zonation in the metallo- genie belt. Copper and molybdenum polymetallic deposit is closer to the rock mass, belonging to the forma- tion of porphyry and skarn deposit type. Lead, zinc and silver polymetallic ore deposits usually are hydro- thermal vein distributicn near the rock mass. Two types of ore deposits are closely intermediate-acid intru- sive bodies on themetallogenic matter and ore-forming fluid,which formed an integrated porphyry-epither- mal polymetallic metallogenic system. This paper, taking Caijiaying Mine,Jiajiayin Mine, Beichagoumen Mine and Xiasigou Mine as examples, illustrates that the porphyry-epithermal polymetallic metailogenic system is indeed widespread in northern Hebei Province. Accordingly, the paper suggests the use of por- phyry-epithermal compositve exploration model instead of previous single vein type exploration of lead, zinc and silver and that reconsiderations and examinations of the peripheral and deep metallogenic potential of mineralized porphyry bodies or vein polymetallic deposit ignored in the previous studies.

关 键 词：斑岩-浅成低温热液成矿系统 多金属矿床 冀北 

分 类 号：P618.2[天文地球—矿床学]