Crystal structure of a new polymorphic modification of niahite, NHMnPO · HO.
In: Crystallography Reports, Jg. 60 (2015-03-01), Heft 2, S. 198-203
Online
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Zugriff:
The crystal structure of a new modification of the niahite mineral NHMnPO · HO, obtained in the form of single crystals under hydrothermal conditions in the MnO-(NH)PO-HO system, is determined by X-ray diffraction (Xcalibur-S-CCD diffractometer, R = 0.0259): a = 17.582, b = 4.909, and c = 5.731 Å; space group D = Pnam, Z = 4, D = 2.497 g/cm. It is shown that the new compound is a polymorphic modification of niahite; it has a layered structure, which differs from the structure of the mineral by the presence of the center of inversion and the doubled a unit cell parameter. It is proposed to consider the minerals and synthetic analogues of the niahite and triphylite groups as members of the common polysomatic series. [ABSTRACT FROM AUTHOR]
Titel: |
Crystal structure of a new polymorphic modification of niahite, NHMnPO · HO.
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Autor/in / Beteiligte Person: | Kiriukhina, G. ; Yakubovich, O. ; Dimitrova, O. |
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Zeitschrift: | Crystallography Reports, Jg. 60 (2015-03-01), Heft 2, S. 198-203 |
Veröffentlichung: | 2015 |
Medientyp: | academicJournal |
ISSN: | 1063-7745 (print) |
DOI: | 10.1134/S106377451502011X |
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