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| 浙西北地区大桥坞铀矿床硫同位素特征研究 | |
| 引用本文： | 王正其,李子颖,汤江伟,陈健.浙西北地区大桥坞铀矿床硫同位素特征研究[J].铀矿地质,2012,28(2):90-94,123. |
| 作者姓名： | 王正其 李子颖 汤江伟 陈健 |
| 作者单位： | 1. 东华理工大学核资源与环境教育部重点实验室,江西南昌330013;核工业北京地质研究院,北京100029 2. 核工业北京地质研究院,北京,100029 3. 浙江省核工业269大队,浙江金华,322000 4. 东华理工大学核资源与环境教育部重点实验室,江西南昌,330013 |
| 基金项目： | 国家自然科学基金（编号：41040019）和东华理工大学核资源与环境教育部重点实验室开放基金资助项目. |
| 摘 要： | 大桥坞矿床是赣杭构造-火山岩带中典型火山岩型铀矿床之一,文章旨在研究大桥坞矿床硫同位素特征及其物源示踪意义。研究表明,大桥坞矿床铀矿石δ34 SV-CDT值介于-2.18‰～-10.43‰,蚀变围岩中的δ34SV-CDT值介于6.67‰～8.63‰,两者硫同位素组成存在明显的差异。分析认为,造成铀矿石的δ34SV-CDT值一致为负,而蚀变围岩的δ34SV-CDT值一致为正的原因,可能是成矿流体本身产生的沸腾去气作用导致硫同位素分馏效应;大桥坞矿床成矿流体中的硫具有幔源属性。 |
| 关 键 词： | 硫同位素 火山岩型铀矿 成矿流体示踪 大桥坞矿床 |
Sulfur Isotope Features of Daqiaowu Uranium Deposit in Northwestern Zhejiang Province |
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| WANG Zheng-qi , LI Zi-ying , TANG Jiang-wei , CHEN Jian.Sulfur Isotope Features of Daqiaowu Uranium Deposit in Northwestern Zhejiang Province[J].Uranium Geology,2012,28(2):90-94,123. | |
| Authors: | WANG Zheng-qi LI Zi-ying TANG Jiang-wei CHEN Jian |
| Institution: | 1. Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology ), Ministryof Education, Nanchang, Jiangxi 330013, China; 2 . Beijing Research Institute of Uranium Geology, Beijing 100029, China; Geological Party No. 269, Nuclear Industry of Zhejiang Province, Jinhua, Zhejiang 321000, China) |
| Abstract: | Daqiaowu deposit is one of the typical volcanic-type uranium deposits in Ganhang tectonic-vol- canic belt, sulfur isotope features of the deposit and its tracing significance was discussed in this paper. Research shows that the values of 834 SVCDT from ores ranges from -2. 18‰ to -10.43‰, and the values of δ^34-CDT from altered wall rock ranges from 6.67‰ to 8.63‰. Remarkable difference of sulfur isotope composition occurs between ore and wall rock. It is considered that the negative values of δ^34-CDTin ura- nium-ores and relatively positive in wall rock might caused by the sulfur isotopic fractionation during boil- ing-degassing of the ore-forming fluids. The sulfur source of Daqiaowu uranium ore-deposit is derived from mantle. |
| Keywords: | sulfur isotope volcanic-typed deposit Daqiaowu uranium ore-deposit northwestern Zheiiang province |
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