| 广西高龙微细浸染型金矿床同位素地球化学研究 |
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| 关键词:isotope micro-disseminated gold deposit Gaolong in Guangxi |
| 基金项目:国家科技支撑计划(编号:2006BAB01B00) |
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| Isotope Geochemistry of the Gaolong Micro-disseminated Gold Deposit in Guangxi |
| S,Pb,H and O isotopic determinations of the ore and gangue minerals in the Gaolong micro-disseminated gold deposit of Guangxi shows that the δ34S value of sedimentary pyrite is-15.3 ‰～+13.6 ‰,the δ34S value of pyrite in the ore-bearing bed is +0.4 ‰～+15.6 ‰,the δ34S value of pyrite in siliceous rocks is +1.7 ‰～+9.7 ‰,and the δ34S value of stibnite in siliceous rocks is-15.3‰～+0.1‰.The sulfur isotope composition of the pyrite tends to decrease from the ore-bearing bed through the siliceous rocks and to the stibnite in siliceous rocks. The 206Pb/204Pb ratio in pyrite is 18.270～18.470, the 207Pb/204Pb ratio is 15.620～15.710, and the 208Pb/204Pb ratio is 38.310～37.740. The oxygen isotope of quartz in the ore deposit is +11.3‰～+23.9‰, the oxygen isotope of water is -4.2‰～+14.4‰, the hydrogen isotope in mineral inclusions is -53.4‰～-77.1‰, the oxygen isotope of calcite in the ore deposit is +10.5‰～+18.6‰, the oxygen isotope of water is -3,2‰～+10.7‰, and the hydrogen isotope in mineral inclusions is -54.5‰～-30.5‰. These data indicate that hydrothermal fluids might have deen derived from magmatic hydrothermal solution and atmospheric precipitation as well as ocean waters. |
| ZHANG Yong-zhong,LI Heng,LIU Wu-hui,XU Wen-xin,DAI Ta-gen.2008.Isotope Geochemistry of the Gaolong Micro-disseminated Gold Deposit in Guangxi[J].Acta Geoscientica Sinica,29(6):697-702. |
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