| 攀西大陆槽稀土矿床深源成矿流体的稳定同位素证据 |
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| 关键词:stable isotope REE deposit Dalucao |
| 基金项目:国家重点基础研究项目(G1999043211) |
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| 摘要: |
| Stable Isotope Evidence of Deep Source Ore-forming Fluid in the Dalucao REE Deposit of the Panxi Rift |
| The features of the ore-forming fluid and the origin of the metallogenic material in the Dalucao REE deposit of Panxi rift were studied by means of H,O and C isotope analyses. The δ 13 C values of the bastnaesite change narrowly from -8.1‰ to -8.0‰ ,while the δD values vary from -89‰ to -79‰. The δD, δ 18 O and δ 13 C of the quartz-fluid inclusions in the orebody are -87‰,+6.0‰ and -8.4‰,whereas he δD and δ 18 O of the fluorite-fluid inclusions in the orebody are -99‰ and -11.6‰,respectively. The study shows that the ore-forming fluid was a mixture of magmatic water and meteoric water. The carbon isotopic features suggest that the carbon in the bastnaesite was derived from the mantle,while the carbon in fluorite-fluid inclusions of the orebody came from a mixed carbon source. |
| WAN De-fang,TIAN Shi-hong.2004.Stable Isotope Evidence of Deep Source Ore-forming Fluid in the Dalucao REE Deposit of the Panxi Rift[J].Acta Geoscientica Sinica,25(2):161-164. |
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