黄金科学技术
黃金科學技術
황금과학기술
GOLD SCIENCE AND TECHNOLOGY
2013年
6期
11-21
,共11页
王立新%贾磊%吴杰%刘冲昊%杨隆勃
王立新%賈磊%吳傑%劉遲昊%楊隆勃
왕립신%가뢰%오걸%류충호%양륭발
地质特征%韧性剪切带%成矿规律%铧厂沟金矿床%陕西省
地質特徵%韌性剪切帶%成礦規律%鏵廠溝金礦床%陝西省
지질특정%인성전절대%성광규률%화엄구금광상%합서성
geological characteristics%ductile shear zone%metallogenic regularity%Huachanggou gold deposit%Shaanxi Province
铧厂沟金矿床位于秦岭褶皱系南部,北距康县-略阳-勉县深大断裂4 km。金矿化严格受地层、岩性及韧性剪切带控制,主要控矿层位为蚀变细碧岩及灰岩与粉砂质千枚岩之间的过渡部位,控矿构造多为压扭性断裂。金矿体呈脉状和透镜状产出,矿化带类型以蚀变细碧岩型及蚀变碳酸盐岩型为主,黄铁矿是矿石中最主要的载金矿物。矿石中金的赋存状态主要为包裹金和裂隙金,粒间金次之,围岩蚀变主要有黄铁矿化、硅化、碳酸盐化、钠长石化和绢云母化等。黄铁矿热电系数和原生晕地球化学研究显示,本区金矿体向深部有一定的延伸,应重点加强细碧岩型矿带和砂岩矿带的地质找矿与探矿工作。
鏵廠溝金礦床位于秦嶺褶皺繫南部,北距康縣-略暘-勉縣深大斷裂4 km。金礦化嚴格受地層、巖性及韌性剪切帶控製,主要控礦層位為蝕變細碧巖及灰巖與粉砂質韆枚巖之間的過渡部位,控礦構造多為壓扭性斷裂。金礦體呈脈狀和透鏡狀產齣,礦化帶類型以蝕變細碧巖型及蝕變碳痠鹽巖型為主,黃鐵礦是礦石中最主要的載金礦物。礦石中金的賦存狀態主要為包裹金和裂隙金,粒間金次之,圍巖蝕變主要有黃鐵礦化、硅化、碳痠鹽化、鈉長石化和絹雲母化等。黃鐵礦熱電繫數和原生暈地毬化學研究顯示,本區金礦體嚮深部有一定的延伸,應重點加彊細碧巖型礦帶和砂巖礦帶的地質找礦與探礦工作。
화엄구금광상위우진령습추계남부,북거강현-략양-면현심대단렬4 km。금광화엄격수지층、암성급인성전절대공제,주요공광층위위식변세벽암급회암여분사질천매암지간적과도부위,공광구조다위압뉴성단렬。금광체정맥상화투경상산출,광화대류형이식변세벽암형급식변탄산염암형위주,황철광시광석중최주요적재금광물。광석중금적부존상태주요위포과금화렬극금,립간금차지,위암식변주요유황철광화、규화、탄산염화、납장석화화견운모화등。황철광열전계수화원생훈지구화학연구현시,본구금광체향심부유일정적연신,응중점가강세벽암형광대화사암광대적지질조광여탐광공작。
The Huachanggou gold deposit is located in the south of the Qinling Mountain fold system,4 km north of Kangxian-Lueyang-Mianxian deep fault.The gold mineralization zone is controlled strictly by strata,lithology and ductile shear zone.Altered spilite and the transition parts between limestone and silty phyllite are the main ore-controlling strata.Compression shear fracture is the main ore-controlling structure.The gold orebody is occurred as veins and lenticle.Altered spilite and altered carbonatite are the main mineralized types.Pyrite is the main gold-carrying mineral.Occurrence of natural gold in the ore is observed included-gold and fissure-filled gold,the secondary type is intergranular gold.Wall-rock alternation are mainly pyrite,silicification,carbonatization,albitization, sericitization,etc.By studying the pyroelectric coefficient and primary halo of pyrite studies,the result shows that the gold ore body is extending to the deep part.It is advisable to strengthen the work of geological prospecting and ore exploitation between spilite ore belt and sandstone ore belt.