新疆乌恰县萨哈尔铜矿床地质特征与找矿标志  

Geological characteristics and prospecting indicator of Sahaer copper deposit in Wuqia County,Xinjiang

作　　者：王玉杰 张琪 杜斌 蒋炜[1] 王宏伟[1] 李述国 WANG Yujie;ZHANG Qi;DU Bin;JIANG Wei;WANG Hongwei;LI Shuguo(China Non-ferrous Metals Resource Geological Survey,Beijing 100012,China;Beijing Institute of Mineral Geology,Beijing 101500,China;School of Earth Science and Resources,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]有色金属矿产地质调查中心,北京100012 [2]北京市矿产地质研究所,北京101500 [3]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《矿产勘查》2023年第11期2085-2093,共9页Mineral Exploration

基　　金：中国地质调查局公益性项目(DD20160001)资助。

摘　　要：萨哈尔铜矿床位于新疆乌恰—康苏有色金属资源矿集区,地处伊利地块新生代凹陷与塔里木地块古生代陆块碰撞结合部位,是吉根地区具有代表性的铜矿床。本次开展的萨哈尔铜矿床综合研究表明,矿体位于恰特多克—萨喀勒恰提向斜北西翼,赋矿层位为安居安组下段(N1a1)含砂层位,赋矿岩性为褪色蚀变长石石英岩屑砂岩。矿体主要呈层状、透镜体状,整体长约1.7 km,厚2~6 m,金属矿物以辉铜矿为主,铜品位为0.95%~1.15%。赋矿层顶底板围岩为浅红色粉砂岩或泥岩,属于沉积-改造型砂岩型铜矿床。本区铜矿床主要找矿标志为灰白色条带状褪色蚀变,向斜两翼与断层叠加等。研究成果可为该地区同类砂岩型铜矿的进一步找矿提供一定依据。The Sahaer copper deposit is located in the Wuqia-Kangsu nonferrous metals resource district of Xinjiang,at the junction of the Yili Mesozoic depression and the Paleozoic Tarim Block,which is a representative copper deposit in the Jigen area.Comprehensive studies of the Sahar copper deposit indicate that the orebody is located on the northwest limb of the Qiateduoke-Sakaletchati anticline,hosted in the lower Anjuan Formation(N1a1)sandy beds.The host rocks are altered arkosic quartz sandstones.The orebodies occur as stratiform and lenticular shapes,about 1.7 km long and 2 to 6 m thick on average,chalcocite is the major metallic mineral,with grades of 0.95% to 1.15% Cu.The hanging wall and footwall of the mineralized horizon are composed of reddish siltstones and mudstones.It is a sedimentary-hydrothermal sandstone copper deposit.The key exploration indicators for copper in this area include grayish white bleached alterations,anticline limbs,and fault superpositions.The research result can provide some basis for further exploration of similar sandstone-hosted copper deposits in this district.

关 键 词：砂岩型铜矿床 褪色化砂岩 找矿标志 乌恰 新疆 

分 类 号：P612[天文地球—矿床学]