英德市下石太镇洋坑矿床地质特征分析

Analysis of Geological Characteristics of Yangkeng Deposit in Xiashitai Town,Yingde City

矿区在区域构造位置上位于东西向佛冈-丰良构造岩浆岩带西段北缘,属佛冈~新丰江后造山岩浆岩带。燕山三期粗粒斑状黑云母花岗岩为矿床赋矿母岩,矿区内共圈定矿体1个,累计查明花岗岩矿资源储量10051.54万m^(3),通过对英德市下石太镇洋坑矿床地质特征与矿体特征分析,确定矿体形态简单,连续性好,厚度稳定,深部矿石完整性好。初步分析了矿石物理性能与加工技术性能,总结了成矿规律,其成因类型为岩浆矿床,成矿时代为燕山三期。该矿床的发现及研究对今后寻找同类型矿床具有一定的借鉴意义。

The mining area is located at the northern edge of the western section of the east-west Fogang Fengliang tectonic magmatic rock belt in the regional tectonic position,belonging to the Fogang Xinfengjiang post orogenic magmatic rock belt.The Yanshan Phase III coarse-grained porphyry biotite granite is the host rock of the deposit.A total of one ore body has been delineated in the mining area,and a total of 100.5154 million cubic meters of granite mineral resources have been identified.Through the analysis of the geological characteristics and ore body characteristics of the Yangkeng deposit in Xiashitai Town,Yingde City,it is determined that the ore body has a simple shape,good continuity,stable thickness,and good deep ore integrity.Preliminary analysis was conducted on the physical properties and processing technology of the ore,and the ore-forming rules were summarized.The genetic type is a magmatic deposit,and the ore-forming era is the Yanshan III stage.The discovery and research of this deposit have certain reference significance for searching for similar types of deposits in the future.