Erratic behavior of platinum-group elements along an olivine-Cr-spinel cotectic in sulfide-undersaturated basaltic magma: roles of Cr-spinel and alloys
文献类型：期刊论文
| 作者 | Chayka, Ivan. F.14; Kamenetsky, Vadim S.12,13; Kutyrev, Anton V.1,11; Barnes, Sarah-Jane10; Stepanov, Aleksandr S.9; Konstantinov, Sergey E.7,8; Baykov, Nikolay I.14; Kryazhev, Sergey G.6; Belousov, Ivan A.5; Zhukova, Irina A.9 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2025-04-24 |
| 卷号 | 15期号:1页码:19 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-025-97281-z |
| 通讯作者 | Kamenetsky, Vadim S.(Dima.Kamenetsky@hotmail.com) |
| 英文摘要 | The behavior of platinum-group elements (PGE) in sulfide-undersaturated primitive magmas may be controlled by crystallization of either Cr-spinel, platinum-group minerals (PGM) or olivine. Evaluation of the PGM-hosted PGE portion is challenging because PGM in volcanic rocks are small and rare. We report on the sizes and compositions of PGM associated with Cr-spinel, the PGE content of Cr-spinel and olivine, and the bulk rock PGE content from sulfide undersaturated arc volcanics of the Tumrok range (Eastern Kamchatka). Platinum-iron and Ir-Os alloys (< 30 to > 3000 nm in size) form inclusions in Cr-spinel. Their presence and composition are mostly independent of Cr-spinel chemistry. Bulk rock PGE contents are erratic and PGE concentrations in Cr-spinel are exceptionally variable (up to 2 orders of magnitude). Whereas PGM inclusions in Cr-spinel and PGE in solid solution in Cr-spinel significantly contribute to the bulk rock PGE budget, a considerable portion of the PGE must be present associated with minerals other than Cr-spinel. The variable PGE content of the rocks is attributed to a combination of: (a) disequilibrium kinetic effects at the Cr-spinel-melt boundary layer, strongly affecting PGE partitioning into Cr-spinel and crystallization of PGM in the layer; (b) the presence of some sufficiently large PGM to cause nugget effects; and (c) melt degassing. |
| WOS关键词 | HIGHLY-SIDEROPHILE ; SILICATE MELTS ; GROUP MINERALS ; NOBLE-METALS ; ICP-MS ; CHROMITE ; RU ; IR ; FRACTIONATION ; INCLUSIONS |
| 资助项目 | Russian Academy of Sciences[42073036] ; National Natural Science Foundation of China[FWME-2024-0004] ; Research topic of the IVS FEB RAS Mineral formation in the supra-subduction zone of the North Pacific[21-17-00122] ; Russian Science Foundation ; Laser ablation ICP-MS analyses in China University of Geosciences (Wuhan)[numero; FSUS-2020-0039] ; Ministry of Science and Higher Education of the Russian Federation |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001475775700002 |
| 出版者 | NATURE PORTFOLIO |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/201686]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Kamenetsky, Vadim S. |
| 作者单位 | 1.Univ Witwatersrand, African Res Ctr Ore Syst Sci CORES, Sch Geosci, 1 Jan Smuts Ave, Johannesburg, South Africa 2.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 08826, South Korea 3.Russian Acad Sci, Inst Earths Crust, Siberian Branch, Irkutsk 664033, Russia 4.Moscow State Univ, Fac Geol, Dept Petrol & Volcanol, Leninskie Gori 1, Moscow 119991, Russia 5.Univ Tasmania, CODES, Hobart, Australia 6.Cent Res Inst Geol Prospecting Base & Precious Met, 1-129 Warshawskoe Chaussee, Moscow 117545, Russia 7.Novosibirsk State Univ, Novosibirsk 630090, Russia 8.SB RAS, Budker Inst Nucl Phys, Novosibirsk 630090, Russia 9.China Univ Geosci Wuhan, Collaborat Innovat Ctr Explorat Strateg Mineral Re, Sch Earth Resources, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 10.Univ Quebec Chicoutimi, Sci Terre, Quebec City, PQ G7H 2B1, Canada |
| 推荐引用方式 GB/T 7714 | Chayka, Ivan. F.,Kamenetsky, Vadim S.,Kutyrev, Anton V.,et al. Erratic behavior of platinum-group elements along an olivine-Cr-spinel cotectic in sulfide-undersaturated basaltic magma: roles of Cr-spinel and alloys[J]. SCIENTIFIC REPORTS,2025,15(1):19. |
| APA | Chayka, Ivan. F..,Kamenetsky, Vadim S..,Kutyrev, Anton V..,Barnes, Sarah-Jane.,Stepanov, Aleksandr S..,...&Park, Jung-Woo.(2025).Erratic behavior of platinum-group elements along an olivine-Cr-spinel cotectic in sulfide-undersaturated basaltic magma: roles of Cr-spinel and alloys.SCIENTIFIC REPORTS,15(1),19. |
| MLA | Chayka, Ivan. F.,et al."Erratic behavior of platinum-group elements along an olivine-Cr-spinel cotectic in sulfide-undersaturated basaltic magma: roles of Cr-spinel and alloys".SCIENTIFIC REPORTS 15.1(2025):19. |
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来源：海洋研究所
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