| 大水沟碲矿床流体包裹体的He、Ar同位素组成及其示踪成矿流体的来源 |
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| 关键词:metallogenic fluid helium-argon isotope tellurium deposit Dashuigou Sichuan Province |
| 基金项目:国家自然科学基金(49672116)，国家杰出青年基金(49825103) |
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| Helium and Argon Isotopic Components of Fluid Inclusions and Tracing to the Source of Metallogenic Fluids in the Dashuigou Tellurium Deposit of Sichuan Province |
| Since the discovery of the Dashuigou tellurium deposit, a new type of deposit, in Sichuan Province in 1993, a lot of research work has been done. However, metallogenic process and substance sources remain controversial. The authors chose three pyrrhotite samples of the pyrrhotite-pyrite stage and three tetradymite samples and six muscovite samples of the tetradymite stage to analyse their helium and argon isotopic components of fluid inclusions. 3He/ 4He ratios are 1.6～2.8 R/Ra with a mean of 2.12 R/Ra for pyrrhotite, 1.2～1.5 R/Ra with a mean of 0.3 R/Ra for tetradymite, and 0.2～2.2 R/Ra with a mean of 1.1 R/Ra for muscovite. 40 Ar/ 4 He ratios of metallogenic fluids change greatly, being 237～379 for pyrrhotite of the pyrrhodtite-pyrite stage and 7～66 for tetradymite of the tetradymite stage. The data obtained suggest that large quantities of mantle fluids were involved in the metallogenic process of the Dashuigou tellurium deposit. |
| MAO Jing-wen,WEI Jia-xiu.2000.Helium and Argon Isotopic Components of Fluid Inclusions and Tracing to the Source of Metallogenic Fluids in the Dashuigou Tellurium Deposit of Sichuan Province[J].Acta Geoscientica Sinica,21(1):58-61. |
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