{"id":"9ff40b7c-717e-4ace-95be-cca41742abcf","title":"湖南东北部万古金矿区硫化物S-Pb-H-O同位素地球化学数据","title_en":"S-pb-h-o isotopic geochemical data of sulfide in Wangu gold deposit, Northeastern Hunan Province","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"S-Pb-H-O同位素数据以word文档格式储存。样品名称为“yy-dd”其中，yy代表采样地点，dd代表样品编号。","description":"2017年，将硫化物单矿物与氧化亚铜在真空状态下加热，进行氧化反应，生成二氧化硫，再用德国产Finnigan MAT-251气体同位素质谱仪分析硫同位素组成，其34S测定值的精确度好，相对误差为±0.2‰，相对标准为V-CDT。\n将样品在溶解之前用Milli-Q水超声清洗。烘干以后称取约50 mg左右的样品，完全溶解在1:1的HNO3+HCl的混合酸中。然后蒸干样品，加入三次0.2 mL的2N HBr，分别蒸干。之后再次溶解在HRb+HNO3的混合酸中，两次通过50 μL的AG1X8（200～400目）阴离子交换树脂来分离纯化铅。然后将样品连同硅胶和磷酸一起点在Re单带上(Gerstenberger and Haase, 1997)。测试所用仪器为Isoprobe-T表面热电离质谱仪，分析精度为206Pb/204Pb为0.2%，207Pb/204Pb 为0.2%，208Pb/204Pb为0.5%。测试结果通过NBS981标样来校正分馏，标样的标准值据为206Pb/204Pb=16.937±0.002 (2σ)，207Pb/204Pb=15.457±0.002 (2σ)和208Pb/204Pb=36.611±0.004 (2σ)(Todt 等, 1996)。\n石英的氧同位素分析采用传统的BrF5分析方法(Clayton and Mayeda, 1963)，用 BrF5与含氧矿物在真空和高温条件下反应提取矿物氧，在700℃与石墨棒反应转化成CO2气体，分析精度为±0.2‰，相对标准为V-SMOW。石英流体包裹体中 H 同位素分析采用Zn分解法。选取40 – 60目的纯净石英样品，在150℃低温下真空去气4小时以上，以彻底除去表面吸附水和次生包裹体水，然后在400℃高温下爆裂取水，并与金属锌反应生成H2，分析精度为±0.2‰，相对标准为V-SMOW。","doi":"https://doi.org/10.1016/j.oregeorev.2017.01.012","projection":"","language":"zh","share_type":"online","east":114.0,"west":113.0,"south":28.0,"north":29.0,"scale":null,"crs":null,"filesize":0.26,"share_policy":"a","ts_created":"2021-05-24T17:48:58.264995+08:00","doi_type":"沿用数据已有DOI","ts_updated":"2021-06-15T11:42:19.009824+08:00","time_description":"151~127百万年","datas_group":3,"time_description_en":"151-127 million years","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"王浩","username":"王浩_iggcas","email":"wanghao@mail.iggcas.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"100 year < x < 1000 year","spatial_resolution":"1km - 10km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"9ff40b7c-717e-4ace-95be-cca41742abcf","three_pole":null,"third_pole":null},"username":"王智琳","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":311}