X-ray diffraction investigation of native Si-Fe alloy minerals from Luobusha, Tibet

被引：11

作者：

Li G. ^{[1
]}

Shi N. ^{[1
]}

Xiong M. ^{[1
]}

Ma Z. ^{[1
]}

Bai W. ^{[2
]}

Fang Q. ^{[2
]}

机构：

[1] Crystal Structure Laboratory, China University of Geosciences

[2] Institute of Geology, Chinese Academy of Geological Sciences

来源：

Frontiers of Earth Science in China | 2007年 / 1卷 / 1期

关键词：

Crystal structure; Mantle mineral; Native Si-Fe alloy mineral; Tibet; X-ray diffraction;

D O I：

10.1007/s11707-007-0003-8

中图分类号：

学科分类号：

摘要：

The origin of native Si-Fe alloy mineral is thought to be related with mantle and aerolite. The native Si-Fe alloy minerals from podiform chromites of the Luobusha ophiolite in the Yarlong Zangbo suture zone were examined by a new method for powder-like diffractograms of small single crystals, using an SMART APEX-CCD area-detector X-ray diffractometer. The powder diffraction pattern shows that the minerals are composed of FeSi, FeSi2, β- FeSi21 and native silicon. The association of these minerals suggests that the crystallization order of the mineral may be from early to late FeSi → FeSi2 → native silicon, accompanied by gradually increasing deoxidization. © Higher Education Press and Springer-Verlag 2007.

引用

页码：21 / 25

页数：4

共 8 条

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