摘要
本文研究了青藏高原东部及邻区两种富碱侵入岩中的角门石和辉石的矿物化学特征及成团演化，划分了矿物的种属和组合。钠质富碱侵入岩的暗色造岩矿物组合；辉石类（霓石为主，霓辉石次之）、碱性问石（钠门石为主，亚铁钠闪石次之）和富铁黑云母。钾质富碱侵人岩的暗色选岩矿物组合：Ca辉石组（透辉石为主）、Ca闪石组（浅门石为主，次为浅闪石角门石）和富镁黑云母。
This paper deals with the mineral chemistry and genetic evolution of two types of alkali-rich intrusive rocks on the eastern Qinghai-Xizang plateau and its adjacent areas. Mineral specialand associations are established as well-The association of melano-minerals in sodium-rich seriesrocks,i. e., pyroxenes (mainly aegirines, minor aegirine-augites ), nyboites (mainly riebeckite, inci-dental arfvedsonites) and Fe-rich biotites. The mineral assemblages in K-rich series rocks are cal-cic-pyroxenes (mainly diopsides ), calcium-amphiboles (mainly achromaites, subordinately achro-maite-amphiboles) and Mg-rich biotites.
出处
《矿物学报》
CAS
CSCD
北大核心
1998年第1期90-96,共7页
Acta Mineralogica Sinica
基金
中国科学院院长基金
国家自然科学基金!49472099
关键词
富碱侵入岩
角闪石
辉石
矿物化学
侵入岩
alkali-rich intrusive rock
amphibole
pyroxene
mineral chemistry
Qinghai-Xizang plateau
