摘要
广西凌云县下甲砂金矿床区域上位于右江再生地槽 ,桂西拗陷、隆林—南宁断褶带东侧 ,凌云穹窿南缘 ,受控于凌云—逻楼孤型背斜及沿背斜轴向延伸的NW向断裂 ;背斜核部的上泥盆统融县组 (D3 r)灰岩是矿区的成矿物质来源。矿体赋存在沿NE向断裂分布排列的溶蚀洼地及溶洞中 ,金以自然粒状产出 ,中细粒为主 ,粗粒次之 ,与锑矿物密切共生。
Xiajia placer gold deposit in Lingyun county of Guangxi is localed at Youjiang regenerated geosyncline, the graben in west Guangxi, orientation of Longlin-Nanning fault zone, the south edge of Lingyun uplift, It controlled by both Lingyun-Luolou oxbow anticline and the nouthwest striring fractures extensioned aling the dircetion of the axial anticline, the limestone strata at Rongxian formation of the upper Devonian system is major of the metallogenic matter resources. The ore bodies were occurruened within karst depression and karst caves charetered along the northeast striting fracture, gold is occurred as natural granule, and it is closely related to Sb ore.
出处
《广西地质》
2000年第2期31-34,共4页
Guangxi Geology
关键词
地质特征
找矿标志
砂金矿床
金矿床
广西
geotogical characteristic
idication
placer gold deposit
Lingyun county of Guangxi
