湖南沃溪金锑钨矿床地质特征及龚家湾矿段找矿潜力探讨  

Geological characteristics of Woxi gold-antimony-tungsten deposit and exploration potential of Gongjiawan ore segement

作　　者：何永淼 尹大改 罗振兴 卢兵 HE Yongmiao;YIN Dagai;LUO Zhenxing;LU Bing(Hunan Chenzhou Mining Co.,Ltd.,Yuanling 419607,Hunan,China)

机构地区：[1]湖南辰州矿业有限责任公司,湖南沅陵419607

出　　处：《矿产与地质》2025年第1期18-31,共14页Mineral Resources and Geology

摘　　要：龚家湾矿段与沃溪金锑钨矿、官庄金矿均位于沃溪大断层下盘的马底驿组赋矿板岩中,沃溪金锑钨矿位于仙鹅抱蛋穹窿NE倾伏端,龚家湾矿段位于两穹窿的凹陷对接处,官庄金矿位于明月山穹窿NW侧伏端,同处“两窿+断层”式独特的成矿构造格局中。文章分析钻探工程已经揭露到的龚家湾矿段V8S工业矿体及V8N蚀变层位,提出沃溪金锑钨矿十六棚公深部向斜轴及两翼,呈“牛腹式”以NEE71°方向,经过龚家湾矿段往官庄金矿延伸,推测两矿区连接部位的龚家湾矿段6~98线,NEE侧伏的矿体向斜轴部和南北两翼存在巨大的找矿潜力。Gongjiawan ore segement,Woxi gold-antimony-tungsten deposit,and Guanzhuang gold deposit are all located in Madiyi Formation ore-bearing slate in the footwall of the Woxi fault.Woxi gold-antimony-tungsten deposit is located at the NE plunging end of the Xiangebaodan dome,Gongjiawan ore segement is located at the concave junction of the two domes,and Guanzhuang gold deposit is located at the NW plunging end of the Mingyueshan dome.Together,they form a unique ore-forming structural pattern described as"two domes plus one fault".The article analyzes the V8S industrial ore body revealed by drilling hole ZK13*2 and the V8N alteration zone revealed by drilling hole ZK6*1 in Gongjiawan ore segement.It is proposed that the deep part of the synclinal axis and both wings of the Shiliugongpeng area in Woxi gold-antimony-tungsten deposit extend in a'cow belly'shape towards the NEE direction at an angle of 71°,passing through Gongjiawan ore segement and extending towards Guanzhuang gold deposit.It is inferred that the Gongjiawan ore segement between prospecting line 6 and 98,which connects the two deposits,has a great exploration potential in the NEE-dipping ore body's synclinal axis and the north and south wings.

关 键 词：沃溪金锑钨矿 官庄金矿 两窿加一断 龚家湾矿段 地质特征 找矿潜力 

分 类 号：P618.51[天文地球—矿床学] P618.66[天文地球—地质学] P618.67