Crystalline-fluid melt inclusions in aquamarines in pegmatites of different origins
Crystalline-fluid melt inclusions in aquamarines in pegmatites of different origins作者机构:Department of Earth Science Zhongshan University Guangzhou 510275 China
出 版 物:《Chinese Science Bulletin》 (科学通报(英文版))
年 卷 期:1999年第44卷第S2期
页 面:154-156页
学科分类:081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程]
主 题:crystalline-fluid melt inclusions aquamarine pegmatites origin.
摘 要:THE crystalline-fluid melt inclusions in aquamarines in pegmatites from Mufushan (Hunan Prov.) andAilaoshan (Yunnan Prov.) have been studied. The research shows that there are obvious differences inthe chemical composition of the inclusions in the aquamarines, which is of great importance for studyingthe forming mechanism and origin of pegmatites. 1 General geology of pegmatites Mufushan is situated in the middle sector of the Jiangnan Ancient Land. The granitic pegmatitesmainly outcrop in granite mass of late Yanshanian (105-145 Ma) which was intruded in middle sector ofthe middle Proterozoic strata. Part of the pegmatites occur in the contact zone of the granite and the metamorphic rocks. The pegmatite veins may be divided into four types, all of them were originated from mag-