新疆青河野马泉金矿床特征及成因探讨  

Discussion on Genesis and Characteristic of Yemaquan Gold Deposit in Qinghe County,Xinjiang

作　　者：陈明勇[1] 王洁[1] 郭巧玲[1] 

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第二区域地质调查大队

出　　处：《新疆地质》2013年第F12期117-120,共4页Xinjiang Geology

摘　　要：野马泉金矿位于谢米斯台-库兰卡孜干（复合岛弧带）Cu-Fe-Au-W-Mo矿带中段，矿床产于志留纪白山包组浅变质碎屑岩中，直接围岩为石炭纪石英闪长玢岩。矿体呈脉状、透镜状，沿走向具收缩膨大、尖灭再现特征。矿床形成可划分为乳白色石英脉、白色石英脉、含电气石石英脉及方解石石英脉4个成矿阶段，其中第二、三阶段为主成矿阶段。石英及包体的氢、氧同位素组成表明，成矿热液来源于变质水。包裹体测温表明，其主成矿阶段成矿温度为176℃~360℃，认为野马泉金矿为与韧-脆性剪切带有关的浅成中低温热液脉型金矿。Yemaquan gold deposit is located in the central of Xiemisitai-Kulankazigan Cu-Fe-Au-W-Mo ore belt,the de-posit is originated in metamorphic clastic rocks of Silurian baishanbao formation .Direct surrounding rock is quartz diorite porphyrite of Carboniferous.Orebody appears vein,phacoid,and with the feature of contraction pinchout reappearance along the strike.The mineralization of gold deposit can be divided into 4 stages：milk white quarz vein stage,white quarz vein stage, verdelite quarz vein stage and calcite quarz vein stage.The second and the third stage are the main mineralization stage.Hy-drogen and oxygen isotopic compositions of quarz and inclusion indicates that the ore-forming hydrothermal derived from metamorphic water,inclunsion thermometry indicates that the temperature of main mineralization stage of the deposit is 176℃-360℃,so it is believed that Yemaquan gold deposit is medium to low temperature liquid vein type gold deposits re-lated with ductile brittle shear zone.

关 键 词：青河 野马泉金矿 韧-脆性剪切带 浅成中低温热液 

分 类 号：P618.51[天文地球—矿床学]