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MINERALOGICAL FEATURES OF ULTRAMAFIC HYPOXENOLITHS IN alkali-rich porphyry

Geotectonica et Metallogenia 2003年第1期27卷 81-90页

作者： LIU Xianfan YANG Zhengxi LIU Jiaduo ZHANG Chengjiang WU Dechao LI Youguo Institute of Earth Science Chengdu University of TechnologyErxianqiao Dongsan Road 1#ChengduSC610059China

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 low-degree partial melting. This constitutes the important mineralogical evidence for the petrogenesis and mineralization of alkali-rich porphyry.

关键词： alkali-rich porphyry deep-source xenoliths enriched mantle low-degree partial melting mineralogical characteristics

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