Thermal expansion of oldhamite, CaS: Implication for the surface of Mercury
Icarus(2023)
摘要
The temperature excursion variation of Mercury's surface may significantly change crystal structure of surface-comprising minerals. The thermal stability of oldhamite (CaS) was investigated to validate its presence on the Mercury's surface. In particular, X-Ray Powder Diffraction (XRPD) and Thermogravimetric Analyses (TGA) on synthetic powder calcium sulfide (Alfa Aesar) were performed with the aim of confirming its stability up to 723.15 K, the highest temperature that is recorded for the surface of Mercury.
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关键词
Mineralogy, Terrestrial planets, Mercury surface
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