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Symplectite of Pyrite and Magnetite in the Massive Sulphide Ore of the Mashan Mine, Anhui Province 被引量:4

Symplectite of Pyrite and Magnetite in the Massive Sulphide ore of the Mashan Mine, Anhui Province
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摘要 A symplectite of pyrite and magnetite in the massive sulphide ore of the Mashan mine, Anhui Provlnce, ls 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 llsed to account for the rare occurrence of such symplectite in natural ores. A symplectite of pyrite and magnetite in the massive sulphide ore of the Mashan mine, Anhui Provlnce, ls 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 llsed to account for the rare occurrence of such symplectite in natural ores.
出处 《Chinese Journal Of Geochemistry》 EI CAS 1997年第4期359-362,共4页 中国地球化学学报
关键词 黄铁矿 磁铁矿 磁黄铁矿 硫化物 安徽 symplectite pyrrhotite pyrite magnetite ore texture
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  • 1Gu Lianxing,K. R. McClay. Pyrite deformation in stratiform lead-zinc deposits of the Canadian Cordillera[J] 1992,Mineralium Deposita(3):169~181

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