小热泉子铜矿床成矿过程分析  

A STUDY ON ORE-FORMING PROCESS OF THE XIAOREQUANZI COPPER DEPOSIT, XINJIANG

作　　者：温春齐[1] 徐新煌[1] 茅燕石[1] 

机构地区：[1]成都理工大学地球科学学院,四川成都610059

出　　处：《矿物岩石》2002年第3期29-32,共4页Mineralogy and Petrology

基　　金：地矿部定向项目 (地科定 96-2 4);国家重大基础研究发展项目 (G19990 43 2 0 0 )

摘　　要：新疆小热泉子铜矿床主要产于下石炭统小热泉子组一套滨、浅海相火山 -沉积组合夹不等量正常沉积组合的岩石中。矿体在较深部呈层状、似层状而在浅部呈脉状 ,构成立交桥式矿化格架。通过基础地质、矿床地质及地球化学特征研究 ,认为小热泉子铜锌矿床的形成过程至少经历了 4期 6个阶段 :即喷流沉积 -成岩成矿期、混合热液叠加改造期、构造改造期和表生风化期。主成矿期为热液叠加改造期。Xiaorequanzi copper deposit occurred mainly in C 1x volcano-sedimentary rock associations with a normal sedimentary rock. The ore bodies are stratiform or stratoid in the depth and vein form at the shallows,displaying an overpass pattern mineralization.Detailed study on the basic geology, ore geology and geochemistry revealed that the formation of this deposit can be divided into 4 epochs and 6 stages, that is, exhalation-sedimentary epoch, superimposed-reform epoch of mixed hydrothermal solution,reform epoch by the structure process and weathering process. The second epoch is the most important mineralization epoch.

关 键 词：铜矿床 立交桥式矿化 喷流沉积-成岩成矿期 热液叠加改造期 矿床地质 地球化学特征 

分 类 号：P618.41[天文地球—矿床学]