摘要
大瑶山成矿带是地处广西东部的一个金多金属成矿带,其中的戴屋金矿是以石英脉型和破碎蚀变岩型为主的金矿床。本文通过对钻孔数据的三维地质建模,并结合前人资料成果,探讨分析戴屋矿区的矿体展布特征及相关控矿地质要素与矿体的关系,认为该区有利的成矿条件包括:砂岩、粉砂岩类的岩性条件;走向NE(局部NEE)的裂隙条件;构造变动引起围岩破碎,形成碎裂岩;发育硅化、黄铁矿化、绢英岩化的蚀变条件。而含碳质、泥质较高的岩石与该区金矿化的关系不大,代表第二期断裂活动的斑岩脉与成矿关系亦不甚密切。
The Dayaoshan metallogenetic belt is a gold polymetallic ore-bearing genetic belt located in the eastern Guangxi.The Daiwu gold deposit in this belt is with mineralization of mainly quartz vein type and clastic altered rock type.Based on drill data,this paper carries out 3Dgeological modeling.Combined with previous researches,the work summarizes the distribution characteristics of ore bodies,and discusses the influence of related ore-controlling geological factors on mineralization.It is concluded that the favorable metallogenic conditions are sandstone and siltstone as the ore-bearing lithology,fracture trending NE（local NEE）,fragmentation from tectonic stress and the alteration of silicification,pyritization and sericitization.However,carbonaceous and argillaceous rocks and porphyry veins represented the second fault activity contribute less to the gold mineralization.
出处
《矿产与地质》
2017年第2期408-413,共6页
Mineral Resources and Geology
基金
广西自然科学基金(2014GXNSFBA118231)
中国地质调查局项目(12120114052501)
广西隐伏金属矿产勘查重点实验室项目(15-140-27-08)
桂林理工大学博士科研启动基金项目(2013年)共同资助
