The thermal behaviour of -anhydrite CaSO4 has been investigated to 1,263 K in-situ real-time using laboratory parallel-beam X-ray powder diVraction 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 signiWcant component along the z direction.
Thermal behaviour of β-anhydrite CaSO4 to 1,263 K / Ballirano, Paolo; Melis, Elisa. - In: PHYSICS AND CHEMISTRY OF MINERALS. - ISSN 0342-1791. - STAMPA. - 34:10(2007), pp. 699-704. [10.1007/s00269-007-0186-2]
Thermal behaviour of β-anhydrite CaSO4 to 1,263 K
BALLIRANO, Paolo;MELIS, ELISA
2007
Abstract
The thermal behaviour of -anhydrite CaSO4 has been investigated to 1,263 K in-situ real-time using laboratory parallel-beam X-ray powder diVraction 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 signiWcant component along the z direction.File allegati a questo prodotto
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