Symplectite of pyrite and magnetite in the massive sulphide ore of the Mashan mine, Anhui Province

被引：5

作者：

Lianxing Gu

Wenlan Zhang

Lin Yin

Bin Zhou

机构：

[1] Nanjing University,Department of Earth Sciences

[2] Nanjing University,State Key Laboratory of Genesis of Endogenic Metal Deposits

来源：

Chinese Journal of Geochemistry | 1997年 / 16卷 / 4期

关键词：

symplectite; pyrrhotite; pyrite; magnetite; ore texture;

D O I：

10.1007/BF02870921

中图分类号：

学科分类号：

摘要：

A symplectite of pyrite and magnetite in the massive sulphide ore of the Mashan mine, Anhui Province, is interpreted to have been formed by their replacing earlier pyrrhotite. The compositions of pyrrhotite, pyrite and magnetite related to this texture are given by electron microprobe analysis. Such a texture is likely to be formed when the ore-forming system reaches the three-phase point of pyrrhotite, pyrite and magnetite from the pyrrhotite stability field. The very small probability for the system to reach this point could be used to account for the rare occurrence of such sympletite in natural ores.

引用

页码：359 / 362

页数：3

共 7 条

[1] Gu Lianxing(1992)Pyrite deformation in stratiform lead-zinc deposits of the Canadian Cordillera Mineralium Deposita 27 169-181
[2] McClay K. R.(1986)On the Carboniferous submarine massive sulphide deposits in the lower reaches of the Changjiang (Yangtze) River Acta Geologica Sinica 60 176-188
[3] Gu Lianxing(1989)Mineral paragenesis in the South China-type massive sulphide and associated iron deposits Minerals and Rocks 9 68-72
[4] Keqin Xu(1997)Chemical evolution and zonation of massive sulphide deposits in volcanic terrains Econ. Geol. 8 549-572
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