摘要
Abstract
Dayao Liuju mining district is located in the east part of the Chuxiong basin,it is a typical sandstone-type copper deposit.The ore body of the deposit is mainly storage in grey feldspar quartz sandstone of the lower Cretaceous Gaofeng Temple Formation concave tho section and the lower sub-member of the Liutho member of the Upper Cretaceous Matoushan Formation.The ore body presents stratiform and lenticular form,which is consistent with the attitude of stratum.The deposit metallogenic geological body is the high porosity rocks assemblage+structure+basin fluids.S-H-O isotope results show the ore-forming fluids mainly is the basin fluids.Fading feldspar quartz sandstone,fold structure+fracture structure,and abnormal geochemical can be taken as the main prospecting criteria.Snowy mountain anticline formed by Himalayan orogeny,under the east-west compressive stress-driven,the reducibility ore-forming fluids moves from deep part to Snowy mountain anticline axial movement along with the direction of fluids movement,the temperature,pressure,performance,and the other physicochemical parameters of fluids changes constantly,it forms copper pyrites,bornite,chalcocite,and the other sulphide.关键词
楚雄盆地/砂岩铜矿/成矿模式/找矿标志Key words
Chuxiong basin/sandstone copper mine/mineralization model/prospecting criteria分类
矿业与冶金
