| Pyrrhotite Textures and Their Genetic Implications in the Hongtoushan Massive Sulphide Deposit,Liaoning Province,China |
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| 作者姓名： | 顾连兴 肖新建 |
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| 作者单位： | DepartmentofEartSciences,StateKeyLaboratoryofMetallogenyofEndogenicMetalDepoisits,NanjingUniversity,N |
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| 摘 要： | The Archaean massive sulphide Cu-Zn deposit at Hongtoushan has been metamorphosed to upper amphibolite facies.An investigation on ore textures shows that pyrrhotite in the deposit was originally produced by submarine exhalation,and subsequently metamorphosed,annealed and recrystallised.Deformation textures formed by progressive metamorphism of pyrrhotite were erased almost completely under peak conditions,and the presently-existing deformation textures and ore mylonites are largely resultant from diaphthoresis.Deformation and annealing of pyrrhotite could have been enhanced by fluds.Retrogressive fluids are characterized by high oxygen fugacity.
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| 关 键 词： | 磁黄铁矿 黄铁矿 硫化物矿床 辽宁 变质作用 |
| 收稿时间： | 29 September 2006 |
Pyrrhotite textures and their genetic implications in the Hongtoushan massive sulphide deposit, Liaoning Province, China |
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| Lianxing Gu,Xinjian Xiao,Pei Ni,Changzhi Wu,hongli Mao.Pyrrhotite Textures and Their Genetic Implications in the Hongtoushan Massive Sulphide Deposit,Liaoning Province,China[J].Chinese Journal of Geochemistry,2001,20(3):210-218. |
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| Authors: | Lianxing Gu Xinjian Xiao Pei Ni Changzhi Wu hongli Mao |
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| Institution: | (1) Department of Geology and Geophysics, University of Calgary, Calgary, Alberta, T2N 1N4, Canada;(2) School of Geosciences, Monash University, P.O. Box 28E, Melbourne, Victoria, 3800, Australia |
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| Abstract: | The Archaean massive sulphide Cu-Zn deposit at Hongtoushan has been metamorphosed to upper amphibolite facies. An investigation on ore textures shows that pyrrhotite in the deposit was originally produced by submarine exhalation, and subsequently metamorphosed, annealed and recrystallised. Deformation textures formed by progressive metamorphism of pyrrhotite were erased almost completely under peak conditions, and the presently-existing deformation textures and ore mylonites are largely resultant from diaphthoresis. Deformation and annealing of pyrrhotite could have been enhanced by fluids. Retrogressive fluids are characterized by high oxygen fugacity. |
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