MINERALOGICAL FEATURES OF ULTRAMAFIC HYPOXENOLITHS IN ALKALI-RICH PORPHYRY

查看全文 作　　者：LIU Xianfan , YANG Zhengxi, LIU Jiaduo, ZHANG Chengjiang, WU Dechao and LI Youguo(Institute of Earth Science, Chengdu University of Technology, Erxianqiao Dongsan Road 1#,Chengdu, SC610059, China) 出　　处：《Geotectonica et Metallogenia》索引2003年第27卷第1期,共10页 摘　　要：Ultramafic hypoxenoliths found in the alkali-rich porphyry in the Liuhe Village, Heqing, Yunnan,China, are of great significance in understanding the origin and evolution of the porphyry. This paper discusses the mineralogical features of the hypoxenoliths. It shows that the xenoliths are characterized by the upper mantle rocks modified to certain extent by the enriched mantle fluid metasomatism in the mantle environment, with the enriched mantle property of Iow-degree partial melting. This constitutes the important mineralogical evidence for the petrogenesis and mineralization of alkali-rich porphyry. 关 键 词：云南 鹤庆地区 富碱斑岩 超镁铁亚异晶体 矿物特征 岩石特性 黑云母 闪石