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The crystal structure of Sr-hardystonite, Sr2ZnSi2O7
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Matteo Ardit
Published/Copyright:
July 12, 2010
Abstract
A synthetic strontium isomorph (Sr2ZnSi2O7) of the hardystonite structure (Ca2ZnSi2O7) was investigated with X-ray powder diffraction. The average structure (S.G. P-421m), a = 8.0007(1) Å, c = 5.1722(1) Å, was refined by Rietveld method and a RF2 = 0.0216 was achieved using 394 independent reflections. The results show that Sr-hardystonite has a melilite-type structure with no incommensurate modulations. Its geometrical and bonding features are consistent with trends defined by the other so-called normal and modulated melilite structures.
Keywords: Melilites; Hardystonite; X-ray diffraction; Rietveld refinement; Powder diffraction structure analysis
Published Online: 2010-07-12
Published in Print: 2010-07
© by Oldenbourg Wissenschaftsverlag, Ferrara, Germany
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Keywords for this article
Melilites;
Hardystonite;
X-ray diffraction;
Rietveld refinement;
Powder diffraction structure analysis
Articles in the same Issue
- Structure determination without Fourier inversion. Part VI: High resolution direct space structure information from one-dimensional data obtained with two wavelengths
- Crystal structure of the incommensurate modulated composite ruthenate [Ba]1.30[(Ru,Cu)O3]
- Crystal structure of the metal-rich phosphide Sm15Ir33P26
- Pyroxene from martian meteorite NWA856: Structural investigations by X-ray and neutron diffraction
- The crystal structure of Sr-hardystonite, Sr2ZnSi2O7
- The restrained Rietveld refinement of modulated trivalent metal polyphosphates M(PO3)3
