“镜铁山式”铁铜矿床地质特征及其成因探讨  

GEOLOGICAL CHARACTERISTICS AND GENESIS OF THE JINGTIESHAN TYPE IRON COPPER DEPOSITS

作　　者：刘华山[1] 李秋林[1] 于浦生[1] 邬介人[1] 

机构地区：[1]冶金部西北地质勘查局五队,中国地质科学院西安地质矿产研究所

出　　处：《矿床地质》1998年第1期25-35,共11页Mineral Deposits

基　　金：酒泉钢铁公司资助

摘　　要：探讨了镜铁山桦树沟矿区铁铜矿床成矿地质背景和成岩成矿的演化过程，阐述控制铁铜矿带在水平和垂向分带变化的地质特征。根据线性构造与火山喷发沉积关系，着重探讨“镜铁山式”铁铜矿床的成因机制，并运用δ３４Ｓ、δ１８Ｏ、δ１３Ｃ测试成果，确立含铁铜硅质岩建造，建立上铁下铜结构分带。认为该类型矿床是与海相火山作用有关的喷气沉积成因矿床，具有与块状硫化物矿床共生。The present paper recounts the achievements made in the performance of a major exploration project assigned by the State Planning Commission. The authors have probed into the metallogenic geological setting as well as rock forming and ore forming evolutionary process of the Huashugou mining area in Jingtieshan, a typical example of the Jingtieshan type iron copper deposits, and expounded geological characteristics that control horizontal and vertical zonal variation of the iron copper ore belt. Based on the relationship between the lineament and the volcanic eruption sedimentation, the authors have dealt emphatically with the genetic mechanism of the Jingtieshan type iron copper deposits; using δ 34 S, δ 18 O and δ 13 C analytical results, they have also confirmed the iron , copper bearing silicalite formation and established a structural zoning characterized by iron in the upper part and copper in the lower part. It is considered that ore deposits of this type are exhalative sedimentary deposits related to marine volcanism which possess the two layer metallogenic structural model together with massive sulfide deposits and make up an iron copper sulfur deposit series.

关 键 词：铁矿床 铜矿床 地质特征 矿床成因 

分 类 号：P618.310.2[天文地球—矿床学] P618.410.2[天文地球—地质学]