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1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Earth and Space Sciences · 术语表

什么是 Incongruent melting, peritectic point？

又称： incongruent melting · peritectic point

Definition 7.3 University Earth and Space Sciences — Year 2 · 第 7 章 — Melting the Mantle

A mineral shows incongruent melting when, on heating, it breaks down into another solid and a liquid of a different composition, instead of melting into a liquid of its own composition. On a binary phase diagram, the point where that liquid coexists with both solids is a peritectic point: unlike a eutectic, it does not lie between the compositions of the two solids.

Part of the system MgO–SiO2 at atmospheric pressure, from Bowen and Andersen (1914). Enstatite (MgSiO3) melts incongruently at the peritectic P, 1557\, C, into forsterite and a liquid of 60.9\,\% SiO2; E is the enstatite–cristobalite eutectic, 1543\, C. The forsterite liquidus is measured only near enstatite: the dashed part is drawn straight to the melting point of forsterite. — Part of the system $\ce{MgO}$ – $\ce{SiO2}$ at atmospheric pressure, from Bowen and Andersen (1914). Enstatite ( $\ce{MgSiO3}$ ) melts incongruently at the peritectic P, $1557\,{}^{\circ}\mathrm{C}$ , into forsterite and a liquid of $60.9\,\%$ $\ce{SiO2}$ ; E is the enstatite–cristobalite eutectic, $1543\,{}^{\circ}\mathrm{C}$ . The forsterite liquidus is measured only near enstatite: the dashed part is drawn straight to the melting point of forsterite.

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