Influence of the Sulfur Concentration in a Fe–S Melt on Diamond Preservation under P–T Conditions of the Earth’s Mantle
- 作者: Sonin V.M.1, Zhimulev E.I.1, Chepurov A.A.1, Chepurov A.I.1, Pokhilenko N.P.1
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隶属关系:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch
- 期: 卷 481, 编号 1 (2018)
- 页面: 922-924
- 栏目: Geochemistry
- URL: https://ogarev-online.ru/1028-334X/article/view/193666
- DOI: https://doi.org/10.1134/S1028334X1807019X
- ID: 193666
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详细
The results of experiments on dissolution of diamond in a Fe melt with variable concentrations of S at high P–T parameters are presented. It is established that the maximal degree of diamond dissolution occurs at a sulfur concentration of 15 wt %. With decreasing or increasing S content, dissolution of diamond slows down and almost does not occur during the period of the experiment (60 min), when the “eutectic” composition is gained. In contrast to a pure Fe melt, the presence of S decreases the carbon solubility and, therefore, reduces the aggressiveness of metal melt in relation to diamonds, thus, stimulating their preservation in the Earth’s mantle, especially if the concentration of S exceeds that in the “eutectic” composition.
作者简介
V. Sonin
Sobolev Institute of Geology and Mineralogy, Siberian Branch
编辑信件的主要联系方式.
Email: sonin@igm.nsc.ru
俄罗斯联邦, Novosibirsk, 630090
E. Zhimulev
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: sonin@igm.nsc.ru
俄罗斯联邦, Novosibirsk, 630090
A. Chepurov
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: sonin@igm.nsc.ru
俄罗斯联邦, Novosibirsk, 630090
A. Chepurov
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: sonin@igm.nsc.ru
俄罗斯联邦, Novosibirsk, 630090
N. Pokhilenko
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: sonin@igm.nsc.ru
俄罗斯联邦, Novosibirsk, 630090
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