贵州省普安县泥堡金矿床野外考察指南  

Field Investigation Guide of Nibao Gold Deposit in Pu’an County,Guizhou Province

作　　者：徐良易 李应辉 王泽鹏[1] 何金坪[1] XU Liang-Yi;LI Ying-Hui;WANG Ze-Peng;HE Jin-Ping(No.105 Geological Team,Guizhou Bureau of Geology and Minneral Exploration and Development,Guiyang 550018,Guizhou,China)

机构地区：[1]贵州省地质矿产勘查开发局105地质大队,贵州贵阳550018

出　　处：《贵州地质》2024年第4期509-518,共10页Guizhou Geology

基　　金：贵州省科技计划项目(黔科合平台人才-CXTD[2021]007)。

摘　　要：贵州省普安县泥堡矿床是以断裂型为主、层控型为辅的复合型矿床。按金矿体的产状、空间位置和控制因素将泥堡金矿划分为断裂型、层控型及残坡积型3类金矿体。主矿体(Ⅲ矿体)受F_(1)逆冲断层控制,单个矿体达中型规模;层控型矿体(Ⅳ矿体)产出于F_(1)断层上盘二龙抢宝背斜550 m范围内的峨眉山玄武岩组与茅口组之间构造蚀变体(SBT)中,规模仅次于断裂型矿体;残坡积型矿体(Ⅶ矿体)由先期形成的矿(化)体或含矿体在地表或近地表经次生风化淋漓富集作用后形成。由于该矿床地质现象十分典型和丰富,被选为中国地质学会第十七届矿床会议野外考察路线之一。因F_(1)为全隐伏,考察点1、2为层控型矿体(Ⅳ矿体)露头点;考察点3为氧化矿体采掘面;考察点4为ZK1182009、ZK1190008钻孔揭露断裂型Ⅲ矿体和层控型Ⅳ矿体的钻孔岩心。The Nibao gold deposit in Puan County,Guizhou Province,is a composite deposit dominated by fault type and supplemented by stratabound type,and can be divided into three types:fault type,stratabound type and residual slope accumulation type,According to the occurrence,spatial location and controlling factors of gold orebodies.The main orebody(Ⅲorebody),reaches medium scale of the single orebody,is controlled by F_(1) thrust fault.The stratabound orebody(Ⅳorebody)occurs in the structural alteration(SBT)between the Emeishan basalt formation and the Maokou formation within 550 m of the Erlong Qiangbao anticline in the hangingwall of the F_(1) fault,and its scale is second only to the fault orebody.The residual alluvial orebody(Ⅶorebody)is formed by the enrichment of the previously formed ore(mineralization)body on or near the surface by secondary weathering.Because of the typical and abundant geological phenomenon of this deposit,it was selected as one of the field investigation routes of the 17th National Conference on Mineral deposits of the Geological Society of China.As F_(1) is completely hidden,The Investigation point 1 and 2 are the surface exposure of stratabound orebody(Ⅳorebody),the Investigation point 3 and 4,respectively,is the mining face of oxidized orebody(Ⅶorebody)and both ZK1182009 and ZK1190008 drill hole of Exposing the borehole cores of fault typeⅢorebody and stratabound typeⅣorebody.

关 键 词：金矿床 野外考察 指南 贵州 普安泥堡 

分 类 号：P618.51[天文地球—矿床学]