Experimental determination of tin partitioning between titanite, ilmenite, and granitic melts using improved capsule designs
文献类型：期刊论文
| 作者 | Huang, Fangfang1,2,3; Wang, Jintuan1,2,3; Xiong, Xiaolin1,2,3; Gao, Mingdi1,2,3; Li, Li1,2,3; Wei, Chunxia1,2,3 |
| 刊名 | AMERICAN MINERALOGIST
 |
| 出版日期 | 2024-11-26 |
| 卷号 | 109期号:11页码:1982-1994 |
| 关键词 | Improved capsule designs Sn partitioning titanite and ilmenite oxygen fugacity |
| ISSN号 | 0003-004X |
| DOI | 10.2138/am-2023-9232 |
| 英文摘要 | Investigating mineral/melt Sn partitioning at high temperatures and pressures is a difficult task because Sn is a redox-sensitive multivalent element and easily alloys with noble metal sample capsules. To obtain accurate Sn partition coefficients between titanite, ilmenite, and granitic melts, we developed single capsule Pt or Au and double capsule Pt95Rh5 (or Au)-Re designs to avoid significant Sn loss at a controlled oxygen fugacity (f(O2)). With these new capsule designs, we performed piston-cylinder experiments of Sn partitioning between titanite, ilmenite, and granitic melts. The experimental P-T-f(O2) conditions were 0.5-1.0 GPa, 850-1000 degrees C, and similar to QFM+8 to similar to QFM-4 (quartz-fayalite-magnetite, QFM, buffer), with f(O2) controlled by the solid buffers of Ru-RuO2, Re-ReO2, Co-CoO, graphite, and Fe-FeO. The obtained mineral/melt Sn partition coefficients (D-Sn(min/melt)) are 0.48-184.75 for titanite and 0.03-69.45 for ilmenite at the experimental conditions. The D-Sn(min/melt) values are largely dependent on f(O2), although the effects of temperature and melt composition are also observed. D-Sn(Ttn/melt) strongly decreases with decreasing f(O2), from similar to 46-185 at the most oxidizing conditions (Ru-RuO2 buffer), to similar to 2-16 at moderately oxidizing to moderately reducing conditions (Re-ReO2 to Co-CoO and graphite buffers), to <1 at the most reducing conditions (Fe-FeO buffer). D(Sn)Ilm/melt exhibits a variation trend similar to D-Sn(Ttn/melt) but is always lower than D-Sn(Ttn/melt) at a given f(O2). These D-Sn(min/melt) values can be applied to quantitatively assess the mineralization potential of granitic magmas. Using D-Sn(Ttn/melt), we estimate that Sn contents are similar to 150-400 ppm in the pre-mineralization magmas of the tin-mineralized Qitianling plutons (South China). |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:001352668900003 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82049]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Wang, Jintuan; Xiong, Xiaolin |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Fangfang,Wang, Jintuan,Xiong, Xiaolin,et al. Experimental determination of tin partitioning between titanite, ilmenite, and granitic melts using improved capsule designs[J]. AMERICAN MINERALOGIST,2024,109(11):1982-1994. |
| APA | Huang, Fangfang,Wang, Jintuan,Xiong, Xiaolin,Gao, Mingdi,Li, Li,&Wei, Chunxia.(2024).Experimental determination of tin partitioning between titanite, ilmenite, and granitic melts using improved capsule designs.AMERICAN MINERALOGIST,109(11),1982-1994. |
| MLA | Huang, Fangfang,et al."Experimental determination of tin partitioning between titanite, ilmenite, and granitic melts using improved capsule designs".AMERICAN MINERALOGIST 109.11(2024):1982-1994. |
入库方式： OAI收割
来源：广州地球化学研究所
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