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A New Intergrowth Consisting of FeO and SiO2 Phases from Lower Mantle

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A grain of unexpected mineral composed of FeO (wiistite) and SiO2 (quartz) with au intergrowth structure was found in ophiolitic chromitite, Luobusa, Tibet. According to high-pressure and temperature experimental studies, this intergrowth broke down from a silicate mineral (perovskite?),suggesting that it is possibly found in mantle depth of more than 670 km.

intergrowthwiistitequartzchromititeophioliteTibet

BAI Wenji、Tao Shufeng、SHI Rendeng、YANG Jingsui、FANG Qingsong、YAN Binggang、Zhang Zhongming

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Institute of Geology, CAGS, Beijing 100037, China

Beijing General Research Institute of Mining & Metallurgy, China

This work was financially grants from the Chinese National Nature Science Foundation

Grants9972073

2001

大陆动力学(英文版)

大陆动力学(英文版)

ISSN：1006-7825
年,卷(期)：2001.6(2)
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