CAJ | 학술논문

麻阳铜矿床（又称九曲湾铜矿床）位于湖南省沅麻盆地中段南部，其南部靠近雪峰山，开采历史悠久，是一类十分罕见的产于砂岩中的自然铜矿床。含矿岩系主要为上白垩统锦江组，矿体呈层状或似层状产出，少数为短距离内尖灭的透镜体，严格受灰白灰绿色砂岩控制；矿化主要以胶结物产出，自然铜占总资源量的90％左右。测试了麻阳铜矿不同工作面的红色粉砂岩、自然铜砂岩（矿石）、辉铜矿砂岩（矿石）及自然铜、辉铜矿的常量元素和微量元素含量，应用 Spearman 秩相关分析对数据进行统计分析。结合矿物组合特点认为，与 Cu 有较强正相关的 Fe、Ag、As、Ba、Sr 等元素对矿化形成条件有指示意义。铜矿化的形成与成岩期热液活动有着密切联系，流体可能来源于低温、弱还原的地下水。
마양동광상（우칭구곡만동광상）위우호남성원마분지중단남부，기남부고근설봉산，개채역사유구，시일류십분한견적산우사암중적자연동광상。함광암계주요위상백성통금강조，광체정층상혹사층상산출，소수위단거리내첨멸적투경체，엄격수회백회록색사암공제；광화주요이효결물산출，자연동점총자원량적90％좌우。측시료마양동광불동공작면적홍색분사암、자연동사암（광석）、휘동광사암（광석）급자연동、휘동광적상량원소화미량원소함량，응용 Spearman 질상관분석대수거진행통계분석。결합광물조합특점인위，여 Cu 유교강정상관적 Fe、Ag、As、Ba、Sr 등원소대광화형성조건유지시의의。동광화적형성여성암기열액활동유착밀절련계，류체가능래원우저온、약환원적지하수。
The Mayang copper deposit located in the Central of Yuanma basin and near to Mount Xuefeng in the southern is a rarely sandstone type native copper deposit.The production of this deposit has a long history,and can be dated to Period of Spring and Autumn ,so far it has provided more than 2 million tons copper which about 90% from native copper.The ore bodies are multistory and mainly occur in the gray white or gray green sandstones of Jinjiang Formation of Cretaceous,and a single ore-body is stratified or lentoid.The native copper is important as cement in sandstones.In this paper,the content of major elements,trace elements and rare earth elements of the redbed rock,ores,native copper and chalcocite were calculated using the correlation analysis to discuss the relationship between the element character and copper mineralization.Kinds of elements,such as Fe,Ag,As,Ba,Sr,are positive correlated with Cu, which show these elements are closely related to the native copper formation.The native copper mineralization is due to the underground thermal water,and this type fluid may be low temperature and weak reduction environment.