Scholarlink

Abstract <p>Experimental studies aimed at the estimation of the solubility of sulfur in Mg,Ca-carbonate melts under lithospheric mantle conditions (MgCO<sub>3</sub>–S, CaMg(CO<sub>3</sub>)<sub>2</sub>–S, CaCO<sub>3</sub>–S and (Mg,Ca)CO<sub>3</sub>–S systems, Ca# (CaO/(CaO + MgO) (molar)) = 0, 0.2, 0.5, 0.8 and 1.0; pressure 6.3 GPa, 1450–1550°C, 20 h). It was experimentally demonstrated that melts of alkaline earth carbonates are capable of dissolving from 1.9 to 6.5 wt % S, while for the first time it was established that the solubility of sulfur directly depends on both temperature and the CaO/MgO ratio in the melt. In particular, it has been demonstrated that the solubility of sulfur in a melt of Ca-carbonate is 6–7 times higher than in a melt of Mg-carbonate. The obtained results indicate that sulfur-enriched melts of alkaline earth carbonates can be considered as potential metasomatic agents, not only capable of transporting sulfur and carbon, but also being potential media for graphite crystallization and diamond growth.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of Ca,Mg-Carbonate Melts Compositions on the Solubility of Sulfur under PT-Parameters of the Lithospheric Mantle

  • 期刊论文

  • 发表日期：

    2025年2月1日

查看全文
  • O. V. Furman,
  • Y. V. Bataleva,
  • E. V. Zdrokov,
  • Y. M. Borzdov,
  • Y. N. Palyanov

摘要

Abstract

Experimental studies aimed at the estimation of the solubility of sulfur in Mg,Ca-carbonate melts under lithospheric mantle conditions (MgCO3–S, CaMg(CO3)2–S, CaCO3–S and (Mg,Ca)CO3–S systems, Ca# (CaO/(CaO + MgO) (molar)) = 0, 0.2, 0.5, 0.8 and 1.0; pressure 6.3 GPa, 1450–1550°C, 20 h). It was experimentally demonstrated that melts of alkaline earth carbonates are capable of dissolving from 1.9 to 6.5 wt % S, while for the first time it was established that the solubility of sulfur directly depends on both temperature and the CaO/MgO ratio in the melt. In particular, it has been demonstrated that the solubility of sulfur in a melt of Ca-carbonate is 6–7 times higher than in a melt of Mg-carbonate. The obtained results indicate that sulfur-enriched melts of alkaline earth carbonates can be considered as potential metasomatic agents, not only capable of transporting sulfur and carbon, but also being potential media for graphite crystallization and diamond growth.