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Contribution to High‐temperature Modifications of the Anhydrous Alkaline Earth Metal Sulfates
Author(s) -
Bimberg R.,
Illner N.,
Puhlmann P. W.
Publication year - 1992
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170270807
Subject(s) - anhydrous , alkaline earth metal , fluorite , microprobe , chemistry , metal , mineralogy , inorganic chemistry , hexagonal crystal system , electron microprobe , crystallography , organic chemistry
Large synthetic crystals of alkaline earth metal fluorides, especially fluorite crystals, contain sometimes unknown small inclusions of hexagonal form. Samples of these crystals were investigated by microscope, X‐ray, and microprobe analysis to identify the included small crystals. Optical behaviour of these inclusions, morphology, chemical composition, and the reaction with water allow their interpretation as high‐temperature modifications of the anhydrous water soluble alkaline earth metal sulfates, partly transformed to the corresponding sulfides.