Challenge to the visualization of the formation process of the epithermal gold deposit and its application to the developments of rare metal resources

浅成热液金矿形成过程可视化挑战及其在稀有金属资源开发中的应用

• 批准号: 23760794
• 负责人: YONEZU Kotaro
• 金额: $ 2.83万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760794/
• 关键词: 金鉱床; 希土類元素; レアメタル; 実験地球化学; 可視化

It is impossible for us to observe the formation process of epithermal gold deposit. Therefore, in order to elucidate the new and precise formation mechanism of epithermal gold deposits, natural epithermal gold-silver vein sample, siliceous deposit formed at geothermal power plant and artificial siliceous gold-bearing material were examined in terms of REE patterns as well as the chemical state of gold and silver. Based on the analysis of epithermal gold vein sample and siliceous deposit, it is reasonably concluded that Ce and Eu anomaly kept the redox condition when those were formed, and bulk analysis result were supported by local analysis for trace elements. On the other hand, the chemical state of gold in artificial materials were different from that in natural gold sample, suggesting that the other hydrothermal fluid should be mixed with hot ascending hydrothermal fluid.

浅成低温热液金存款的形成过程是不可能观测到的。为此，为了阐明浅成低温热液金矿床新的、精确的形成机制，对天然浅成低温热液金银脉状样品、地热发电厂形成的硅质存款和人工硅质含金物质进行了稀土元素配分模式和金、银化学状态的研究。通过对浅成低温热液金矿脉样和硅质存款的分析，合理地推断出Ce、Eu异常保持了其形成时的氧化还原条件，局部微量元素分析支持了整体分析结果。另一方面，人造样品中金的化学状态与自然金样品不同，表明其他热液可能与热的上升热液混合。

项目成果

菱刈鉱山山神鉱床慶泉3-1脈における金鉱化作用

菱狩山山上矿床 Keisen 3-1 矿脉中的金矿化

• 发表时间: 2012
• 作者: 菅琢磨、今井亮、高橋亮平、田中崇裕、米津幸太郎、岡上祥典、L. PAGE;A. SCHERSTEN,渡邊公一郎
• 通讯作者: A. SCHERSTEN,渡邊公一郎

インドネシア、ジャワ島西部、Cibaliung金鉱床における鉱化作用の特徴

印度尼西亚西爪哇Cibaliung金矿床成矿特征

• 发表时间: 2012
• 作者: 池田紗希子;M. F. Rosana;米津幸太郎;渡邊公一郎
• 通讯作者: 渡邊公一郎

Niobium and Tantalum Mineral Resource Potential in Abu Rusheid, South Eastern Desert, Egypt

埃及东南沙漠阿布鲁谢德的铌和钽矿产资源潜力

• 发表时间: 2012
• 作者: Kotaro Yonezu;Takuma OKITO;Mohamed El-Ahmady IBRAHIM and Koichiro WATANABE
• 通讯作者: Mohamed El-Ahmady IBRAHIM and Koichiro WATANABE

有価金属の自然界における濃集機構に学ぶリサイクル

借鉴自然界有价金属的富集机制进行回收

• 发表时间: 2011
• 作者: Kotaro YONEZU;Tatsuya SHINKAWA;Takuma OKITO;Mohamed El-Ahmady IBRAHIM and Koichiro WATANABE;米津幸太郎・横山拓史・渡邊公一郎
• 通讯作者: 米津幸太郎・横山拓史・渡邊公一郎

Fluid Geochemistry Characteristics of Simbolon and Pusuk Bukit Geothermal Area in Toba Caldera, North Sumatra Province, Indonesia

印度尼西亚北苏门答腊省多巴火山口Simbolon和Pusuk Bukit地热区流体地球化学特征

• 作者: Brenda Ariesty KUSUMASARI;Kotaro YONEZU;Niniek Rina HERDIANITA;Sachihiro TAGUCHI and Koichiro WATANABE
• 通讯作者: Sachihiro TAGUCHI and Koichiro WATANABE