| 江西金山金矿含金黄铁矿的Rb-Sr年龄 |
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| 关键词:gold deposit metallogenic epoch Rb-Sr dating material resource Jinshan Jiangxi Province |
| 基金项目:国家自然科学基金项目(编号:40373025) |
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| Rb-Sr Age of Gold-bearing Pyrite in the Jinshan Gold Deposit,Jiangxi Province |
| There are many different views concerning the metallogenic epoch of the Jinshan gold deposit. The authors tested the Rb-Sr age of the gold-bearing pyrite from the metamorphic ore bodies in the Jinshan gold deposit. The Rb-Sr isochron age of the Au-bearing pyrite is about (838±110) Ma, and the initial 87Sr/86Sr is equal to 0.7045± 0.0020. It is thus held that the Jinning Period is the main time for the formation of the metamorphic gold deposit. The (87Sr/86Sr) i value of the pyrite is lower than that of the terrigenous silicates (0.720) and close to that of the basalts (0.704). In combination with previous isotope, REE and trace element studies, the authors consider that the ore-forming material of the metamorphic ore bodies in the Jinshan gold deposit was derived from the metamorphic rock, and the ore-forming fluid originated from the deep metamorphic water. |
| MAO Guang-zhou,HUA Ren-min,GAO Jian-feng,LONG Guang-ming,LU Hui-juan.2008.Rb-Sr Age of Gold-bearing Pyrite in the Jinshan Gold Deposit,Jiangxi Province[J].Acta Geoscientica Sinica,29(5):599-606. |
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