【摘要】 东秦岭稀有金属矿床成矿及分布以河南省卢氏、南召两地区几个典型矿床最具代表性,归纳其总体特征为:1)矿床的形成与地壳早期板块俯冲作用有密切关联,矿床均产于俯冲带中部;2)深大断裂与区域大断裂交汇部位是稀有金属矿赋存的最佳场所;3)原生矿全部产于元古界变质岩之中;4)成矿母岩为碱性花岗岩,成岩成矿时代以加里东早期为主,华力西期次之;5)赋矿脉岩为伟晶岩脉,常形成脉岩群;6)矿床成因类型为花岗伟晶岩浆分异交代型铌钽矿床。更多还原

【Abstract】 Referring the East Qinling rare metals deposit ore-form and distribution,Lushi and Nanzhao in Henan were the most representative areas.The overall features are: 1) deposit formation and crust early plate subduction have had a close association,deposit are produced all in central subduction zones;2) deep fault and regional major fault intersection part is the best place to rare occurrence alukeqinqi;3) the original mineral all originated in proterozoic era metamorphic rocks;4) mother rock is an alkaline granite,diagenetic mineralization epoch with early Caledonian primarily,variscan second;5) the host vein rocks are pegmatitic dikes,often form dike group;6) deposit genetic types of granitic Pegmatite lava differentiation replacement type nb-ta mineral deposits.更多还原