阳山花岗岩复式岩体的矿物标型特征与复式岩体的划分  

The Typomorphic Characteristic of Minerals of Yangshan Multiple Granite Body and Its Petrological Subdivision

作　　者：陈学正 周玉林 张素菊 Chen Xuezheng;Zhou Yulin;Zhang Suju

机构地区：[1]中国地质科学院矿床地质研究所

出　　处：《岩矿测试》1983年第3期182-189,共8页Rock and Mineral Analysis

摘　　要：众所周知,正确划分复式岩体是花岗岩研究的一项课题,在理论和实践上都有重要的意义。复式岩体划分的标志是多方面的,本文在德化幅区测报告的基础上,从矿物标型特征着手,对阳山花岗岩复式岩体进行了工作,并得到以下初步认识。一、岩体概况阳山花岗岩复式岩体位于福建省德化县和永春县境内,面积约为220平方公里,由桂洋、国宝、岩头、盖德、白石岩和苦坑仔等六个岩体组成.The Yangshan granite is a multiple rock body,in which,the Yantou rock body,Gaide rock body and Kukenzi rock body are rather similar to one ano-ther in structure and texture,but their typomorphic characteristics of minerals are different,therefore,we can classify these rock bodies into two petrological types.In the Yantou rock body and Gaide rock body,the degree of order of the K-feldspar is lower(0.37-0.74),the Ab content of the K-feldspar is relatively high,the ratios of FeO/FeO+MgO and Al_(2)O_(3)/FeO+Fe2O3+MgO+A12O3 of the biotite are lower,ranging from 0.665 to 0.724 and 0.2557 to 0.375 respectively)while in the Kukenzi rock body,the degree of order of the K-feldspar has increase to 0.77-0.95,the ratios of FeO/FeO+MgO and Al_(2)O_(3)/FeO+Fe2O3+MgO+Al_(2)O_(3)of the biotite are higher than that of the Yantou-and Gaide rock body.Moreover the typomorphic characteristics of Zircons for the two types of the granites are obviously different.The paper has also confirmed that the conclusion drawn from the typomorphic study of the minerals coincides with the result of petrological and geochemical studies of these granites.

关 键 词：复式岩体 矿物标型特征 阳山 花岗岩 福建省德化 白石岩 永春县 初步认识 

分 类 号：P61[天文地球—矿床学]