滇中罗茨地区超基性碱性岩带中橄榄石、辉石和角闪石的成份及演化浅析

A BRIEF INTRODUCTION OF COMPOSITIONS AND EVOLUTION OF OLIVINE, PYROXENE AND HORNBLENDE OF ULTRABASIC ALKALINE ROCKS IN LUOCI REGION, CENTRAL YUNNAN

罗茨地区超基性碱性岩带为正常的超基性岩－超基性碱性岩－中性碱性岩－碳酸岩组合。本文根据费氏台测定和矿物电子探针分析资料，对其主要矿物橄榄石、辉石、角闪石的种属、成分相关性及演化特征进行了研究。

The ultrabasic alkaline rock belt in luoci region has an usual assemblage of ultrabasic rock-ultrabasic alka-line rock-intermediate alkaline rock-carbonatite. According to the universal stage determination and electron microprobe analysis of minerals , the research results of the variety of olivine , pyroxene , hornblende, composition correlation and evolution characteristics are put forward in this paper, which indicate that the mineral compositions show regular changes with the evolution of the parent magma.