Thermal behaviour of β-anhydrite CaSO4 to 1,263 K

Autor: Elisa Melis, Paolo Ballirano
Rok vydání: 2007
Předmět:
Zdroj: Physics and Chemistry of Minerals. 34:699-704
ISSN: 1432-2021
0342-1791
DOI: 10.1007/s00269-007-0186-2
Popis: The thermal behaviour of β-anhydrite CaSO4 has been investigated to 1,263 K in-situ real-time using laboratory parallel-beam X-ray powder diffraction data. The cell parameters expanded anisotropically, the c axis being the “softest”. This behaviour is due to the deformation of the CaO8 polyhedron. In fact the two longest, independent, Ca–O bond distances show a significant component along the z direction.
Databáze: OpenAIRE