四川平武稀有金属花岗岩与绿柱石的成矿属性  

RELATIONSHIP BETWEEN THE RARE-METAL CONTAINED GRANITIC INTRUSIONS AND BERYL MINERALIZATION IN PINGWU,SICHUAN,CHINA

作　　者：叶松[1] 亓利剑[1] 罗永安[1] 周开灿 裴景成[1] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]西南工业大学,四川绵阳621000

出　　处：《地质科技情报》2001年第2期65-70,共6页Geological Science and Technology Information

基　　金：国家自然科学基金资助项目 ( 4 9772 0 96)

摘　　要：通过对四川平武稀有金属花岗岩体的岩石地球化学特征的研究 ,阐述该区花岗岩与绿柱石的成矿关系。研究表明 :平武花岗岩体造岩矿物组合为石英、钠长石、钾长石和白云母 ;岩石化学成分铝过饱和、富钠、偏碱性 ,稀土元素含量很低 ,富含 Be,W,Sn,L i,Ta,Rb等稀有元素 ;属花岗岩浆高度分异演化晚期阶段的产物 ;This paper presents lithogeochemical characteristics of the rarefaction metal granite mass in Pingwu, Sichuan and discusses preliminarily the relationship between the granite and Be, W, Sn minerogenesis. The forming minerals of the granite mass rock are composed of quartz, albite, potassium-feldspar and phlogopite in Pingwu. Its petrochemical compositions are supersaturated Al, rich Na and inclined to alkaly. Its REE content is very low but its rare elements are many such as Be, W, Sn, Li, Ta, Rb etc. The granite mass is formed by high differentiation evolution of granite magma at its latest stage. While the pneumatolytic-hydrothermal deposits of beryl, scheclite and casiterite are formed by the postmagmatic greisenization.

关 键 词：稀有金属花岗岩 岩石地球化学 绿柱石宝石 成矿属性 四川 化学成分 岩浆活动 

分 类 号：P619.281[天文地球—矿床学] P588.121[天文地球—地质学]