陕西金龙山锑金矿床地球化学特征及成因意义  

Geochemical Characteristics and Genesis Significance of Jinlongshan Stibonium-Gold Deposit,Shaanxi Province

作　　者：吕喜旺 史文胜[2] 刘新会[2] 高景刚[3] 

机构地区：[1]武警黄金第二总队,河北廊坊065000 [2]武警黄金第五支队,陕西西安710100 [3]长安大学地球科学与资源学院,陕西西安710054

出　　处：《黄金科学技术》2012年第2期1-7,共7页Gold Science and Technology

基　　金：中央地质勘查基金项目"陕西省镇安县金龙山矿带岩金普查(2011)"(编号:HJ20110202)资助

摘　　要：陕西省金龙山锑金矿产于南秦岭镇旬盆地上泥盆统南羊山组(D3n)—下石炭统袁家沟组(C1y)细碎屑岩—碳酸盐岩建造中,受断裂、短轴背斜及有利岩性等控制,矿化元素Au、Hg和Sb水平分带明显,矿化集中区呈等间距分布。根据矿区大地构造环境,结合赋矿地层、矿石微量元素、稀土元素分配模式以及S、Pb、C、H、O同位素综合分析,认为成矿物质和成矿流体主要来自浅变质化学沉积岩—碳酸盐碎屑岩,成矿流体在中生代构造动力作用下,萃取了赋矿地层和下伏地层中的含矿元素,沿容矿构造迁移沉积富集,形成了金龙山特大型金矿床,伴生汞锑成矿。Jinlongshan stibonium-gold deposit of Shaanxi Province is located in thin clastic-carbonate rocks of the late Devonian Nanyangshan and lower Carboniferous Yuanjiagou groups in the Zhenxun basin of south Chinling,which is controlled by faults,minor-axis anticlines and benifical lithologies,and equally displays a lateral Au-Hg-Sb zone distribution.Based on tectonic setting,ore stratum,ore trace elements,REE distribution and S、Pb、C、H、O isotope analysis,ore minerals and fluids are considered to be from low metamorphic chemical sedimentary and carbonate clastic rocks under Mesozoic tectonic mechanism,obtained mineral elements from ore-hosted and underlying strata,then moved and deposited ore minerals in ore-related faults,finally,formed superlarge Jinlongshan gold deposit,with a byproduct of stibonium.

关 键 词：微量元素 稀土元素 同位素 金龙山锑金矿床 陕西省 

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