浙江省浅色花岗岩体中杂英长石形成的研究(英文)  

Myrmekite in Leucogranitic Rocks from Zhejiang Province, South-east of China

作　　者：穆罕默德.埃罗密勒 巩恩普[1] 孙旭东[1] 陈兴华[1] 

机构地区：[1]东北大学

出　　处：《有色金属》2003年第3期93-97,共5页Nonferrous Metals

基　　金：国家自然科学基金资助项目 ( 4 0 0 72 0 0 6) ;辽宁省"十五"科技攻关项目 ( 2 0 0 12 3 0 0 0 1)~~

摘　　要：岛状杂英长石、钙华瘤和轮圈是产于浙江省浅色花岗岩体中的三种杂英长石。偏光显微镜下观察表明 ,杂英长石是钠长石和钾长石置换作用的产物。岩石学研究表明 ,杂英长石的形成是复杂的化学作用过程 ,主要是在钠长石从钾长石中脱溶并在其边缘结晶之前完成。因此 。Rim, wartlike, and isolated myrmekite are three types of myrmekite that occur in the Zhejiang leucogranite. Polarized light microscope investigations suggest that myrmekite is the product of K feldspar and plagioclase replacement. Petrographic evidence shows that myrmekite formation is a complex reaction, where the main phase is formed prior to exsolution of albite from K feldspar and crystallization of albitic rims. The formation of myrmekite is therefore a reaction occurring during late magmatic stage.

关 键 词：杂英长石 钙华瘤 浙江 花岗岩 偏光显微镜 钠长石 钾长石 置换作用 岩石学 

分 类 号：P578.968[天文地球—矿物学]