河南镇平县祈子堂金矿地质特征及矿床成因分析

Geological characteristics and genesis analysis of Qizitang gold deposit in Zhenping County of Henan

为了扩大祈子堂金矿区及外围找矿成果,有必要对祈子堂金矿作进一步的研究。在详细研究祈子堂金矿床地质特征的基础上,结合同位素分析结果,对矿床成因进行探讨。结果表明:金矿体的产出与楸树湾燕山期斑岩体外围的花岗岩岩枝、岩脉关系密切,金矿体与其在空间分布上联系紧密,成矿物质可能来源于岩浆,另有低温-中温热液构造蚀变岩型金矿体产出。研究认为其成因类型为成矿物质可能与斑岩有关的、分布在斑岩外部围岩构造破碎带中的低-中温热液构造蚀变岩型金矿床。目前勘查和评价的主要为低温热液构造蚀变岩型部分,规模较小。根据新认识调整找矿思路,找寻成矿物质可能与斑岩有关的、分布在斑岩外部围岩构造破碎带中的低-中温热液构造蚀变岩型金矿床,矿区及外围具有良好找矿前景。

In order to expand the exploration result of Qizitang gold deposit and its surrounding area,it is necessary to carry out further research on Qizitang gold deposit.Based on the detailed study of the geological characteristics of Qizitang gold deposit,combined with the isotope analysis result,the deposit genesis is analyzed.The study result indicates that the occurrence of gold orebody is closely related to the granite branches and veins surrounding the Yanshanian porphyry in the Lushuwan area.The gold orebodies are closely related to their spatial distribution,and the ore-forming materials might come from the magma.Additionally,low to medium temperature hydrothermal structural alteration rock type gold deposit is also produced.It is considered that the genetic type is the low to medium temperature hydrothermal altered rock type gold deposit,which might be related to the porphyry and distributed in the structural fracture zone of the surrounding rock outside the porphyry.At present,the exploration and evaluation mainly focus on the low temperature hydrothermal structural altered rock type deposit,with a relatively small scale.Based on the new understanding to adjust the exploration approach and search for low to medium temperature hydrothermal altered rock type gold deposit that might be related to the porphyry and distributed in the structural fracture zone of the surrounding rock outside the porphyry.There is a good exploration prospect in the mining area and surrounding areas.