Chlorartinite, a volcanic exhalation product also found in industrial magnesia 
screed

Sugimoto, K.; Dinnebier, R. E.; Schlecht, T.

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Chlorartinite, a volcanic exhalation product also found in industrial magnesia screed

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Sugimoto, K.
Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Dinnebier, R. E.
Scientific Facility X-Ray Diffraction (Robert E. Dinnebier), Max Planck Institute for Solid State Research, Max Planck Society;

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Sugimoto, K., Dinnebier, R. E., & Schlecht, T. (2006). Chlorartinite, a volcanic exhalation product also found in industrial magnesia screed. Journal of Applied Crystallography, 39, 739-744.

Cite as: https://hdl.handle.net/21.11116/0000-000E-FFA5-9

Abstract

The volcanic exhalation product chlorartinite, [Mg-2(CO3)(H2O)(OH)]Cl
center dot H2O, has recently been found to be a minor, and in some
samples a major, component of magnesia floors for industrial use. In
order to be able to perform quantitative phase analysis using the
Rietveld method, its crystal structure was determined from
high-resolution synchrotron powder diffraction data by the global
optimization technique of simulated annealing and Rietveld refinement.
The final R-p and R-wp values are 5.23% and 6.56%, respectively.
Chlorartinite crystallizes in the rhombohedral space group R3c (No.
161), with a = 23.14422 (16) angstrom, c = 7.22333 (5) angstrom, V =
3350.84 (5) angstrom(3), Z = 18. The building units of chlorartinite
consist of MgO6 octahedra forming 15-membered puckered rings which are
interconnected by CO3 triangular moieties. The rings are stacked to
form a honeycomb-like three-dimensional framework structure with large
isolated channels. Within the channels, free chlorine atoms and
disordered water molecules are located.