滇西花岗伟晶岩  

GRANITIC PEGMATITESIN WEST YUNNAN

作　　者：高子英[1] 吕伯西[1] 段建中[1] 潘长云[1] 

机构地区：[1]云南省地质科学研究所

出　　处：《云南地质》1993年第4期367-372,共6页Yunnan Geology

摘　　要：滇西壳型花岗伟晶岩,可分为七个带。其中多数为喜马拉雅期产物,主要产于剪切带内,为花岗岩浆之不混溶熔离岩浆产物。存在两冷成矿系列,白云母系列以Be矿化为主,锂云母系列以Li、Nb、Ta矿化为主,同时还存在白云母—锂云母过渡系列,以Li、Sn、Nb、Ta和Be 矿化为主。分异良好的富晶洞含Be花岗伟晶岩,产宝石级的绿柱石、黄玉和水晶。幔型的长岭岗伟晶黑鳞云母岩为碱性岩浆之不混溶熔离岩浆产物,以U、Th、Zr、Hf、Nb和Li矿化为主。The crust-derived granitic pegmatites in west Yunnan can be divided into 7 zones. And most of them were occurred in Himalayan period and mainly in the shear zone, which were formed by the immiscible magma from granitic magma. There are 2 metallogenetic series; the muscovite series mainly with Be metallogenesis and the lepidolite series mainly with Li, Nb, Ta metallogenesis, besides which there is a muscovitelepidolite transitional series main-ly with Li, Sn, Nb, Ta and Be metallogenesis. The gem-grade beryl, topaz and rock crystal are occurred in the well differentiated hypermiarolitic Be-bearing granitic pegmatite. The mantle-derived Changlinggang pegmatitic protolithionitite mainly with U, Th, Zr, Hf, Nb and Li matallogenesis was resulted from the immiscible magma of the alkaline mag-ma.

关 键 词：花岗伟晶岩 滇西 岩浆 白云母 碱性岩 喜马拉雅期 成矿系列 母系 母岩 矿化 

分 类 号：P578[天文地球—矿物学] P618[天文地球—地质学]