宁夏中卫市大铜沟铜矿地质特征及控矿因素浅析  

Geological characteristics and ore-controlling factors of the Datonggou copper deposit in Zhongwei City of Ningxia

作　　者：宋新华[1,2] 李红宇[3] 

机构地区：[1]中国地质大学,北京100083 [2]宁夏地质矿产勘查开发局,银川750021 [3]宁夏有色金属地质勘查院,银川750200

出　　处：《矿产与地质》2009年第2期118-123,共6页Mineral Resources and Geology

摘　　要：大铜沟铜矿体赋存于石炭系上统土坡组底部,即石炭系下统臭牛沟组平行不整合面之上。矿体呈似层状。含矿岩性为灰白色石英岩状砂岩及灰绿色粉砂质板岩。矿化主要为细脉状、浸染状。矿石矿物为孔雀石、兰铜矿,偶见辉铜矿及黄铜矿。铜矿石中伴生金。控矿因素为层位、岩相、岩性及构造条件。成因类型为沉积-改造砂(页)岩型铜矿床。The Datonggou orebodies occurred at the bottom of Tupo Formation of Upper Carboniferous,which is above the parallel unconformity surface of Chouniugou Formation of Lower Carboniferous with the orebodies presenting stratiform-like shapes.The ore-bearing lithology is dominated by incanus quartzite sandstone and celadon silty slate.The mineralization mainly presented in thin vein and dissemination status.The minerals of ores are dominated by malachite,azurite with chalcocite and chalcopyrite found on occasion....

关 键 词：砂岩铜矿床 沉积改造 地质特征 控矿因素 卫宁北山 宁夏 

分 类 号：P618.41[天文地球—矿床学]