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Henderson, C.M.B., Taylor, D. (1989) Structural behaviour of chkalovite, Na2BeSi2O6: a member of the cristobalite family. Mineralogical Magazine, 53 (369) 117-119 doi:10.1180/minmag.1989.053.369.14

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Reference TypeJournal (article/letter/editorial)
TitleStructural behaviour of chkalovite, Na2BeSi2O6: a member of the cristobalite family
JournalMineralogical MagazineISSN0026-461X
AuthorsHenderson, C.M.B.Author
Taylor, D.Author
Year1989 (March)Volume53
Issue369
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_53/53-369-117.pdf+
DOIdoi:10.1180/minmag.1989.053.369.14Search in ResearchGate
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Mindat Ref. ID1481Long-form Identifiermindat:1:5:1481:0
GUID0
Full ReferenceHenderson, C.M.B., Taylor, D. (1989) Structural behaviour of chkalovite, Na2BeSi2O6: a member of the cristobalite family. Mineralogical Magazine, 53 (369) 117-119 doi:10.1180/minmag.1989.053.369.14
Plain TextHenderson, C.M.B., Taylor, D. (1989) Structural behaviour of chkalovite, Na2BeSi2O6: a member of the cristobalite family. Mineralogical Magazine, 53 (369) 117-119 doi:10.1180/minmag.1989.053.369.14
In(1989, March) Mineralogical Magazine Vol. 53 (369) Mineralogical Society
Abstract/NotesThe atomic structure of chkalovite, Na2BeSi2O6, has been determined and refined by Simonov et al. (1976). It is orthorhombic, space group Fdd2, with cell parameters: a = 21.129 (5), b = 6.881 (2), and c = 21.188 (5)/Ã…. The structure is very similar to that of alpha-cristobalite (Dollase, 1965), comprising a framework of ordered BeO4 and SiO4 tetrahedra with the sodium atoms occupying sites within the cavities of the beryllosilicate framework. Taylor (1972) developed a tilting model for the cristobalite structure assuming regular tetrahedra. In addition to the single tilt system deduced for cristobalite (Taylor, 1972, 1984a) chkalovite has secondary tilt systems involving a slight adjustment of the structure by a small cooperative tilt or twist of some tetrahedra about one or more of their three-fold axes (see fig. 1 of Simonov et al., 1976).

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Chkalovite

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Henderson, C. M. B., Taylor, D. (1988) The Structural Behaviour of the Nepheline Family: (3) Thermal Expansion of Kalsilite. Mineralogical Magazine, 52 (368) 708-711 doi:10.1180/minmag.1988.052.368.17
Henderson, C. M. B., Taylor, D. (1982) The structural behaviour of the nepheline family: (1) Sr and Ba aluminates (MAl2O4) Mineralogical Magazine, 45 (337) 111-127 doi:10.1180/minmag.1982.045.337.13
Clark, A. M. (1989) Editorial. Mineralogical Magazine, 53 (369) 1 doi:10.1180/minmag.1989.053.369.01
Taylor, D. (1983) The Structural behaviour of tetrahedral framework compounds—a review. Part I. Structural behaviour. Mineralogical Magazine, 47 (344) 319-326 doi:10.1180/minmag.1983.047.344.06
Taylor, D. (1989) Thermal decomposition of Li8(Al6Si6O24)Cl2. Mineralogical Magazine, 53 (371) 380-382 doi:10.1180/minmag.1989.053.371.15
Peckett, A. (1989) Quantitative colours of opaque minerals. Mineralogical Magazine, 53 (369) 71-78 doi:10.1180/minmag.1989.053.369.07
Taylor, D. (1984) The structural behaviour of tetrahedral framework compounds — a review Part II. Framework structures. Mineralogical Magazine, 48 (346) 65-79 doi:10.1180/minmag.1984.048.346.09
Matsubara, S., Kato, A. (1989) A barian bannisterite from Japan. Mineralogical Magazine, 53 (369) 85-87 doi:10.1180/minmag.1989.053.369.09
Henderson, C. M. B., Taylor, D. (1984) Thermal expansion behaviour of beryllonite [Na(BePO4)] and trimerite [CaMn(BeSiO4)3]. Mineralogical Magazine, 48 (348) 431-436 doi:10.1180/minmag.1984.048.348.14
Brown, William L., Parsons, Ian (1989) Alkali feldspars: ordering rates, phase transformations and behaviour diagrams for igneous rocks. Mineralogical Magazine, 53 (369) 25-42 doi:10.1180/minmag.1989.053.369.03
Henderson, C. M. B., Taylor, D. (1977) The thermal expansion of tugtupite. Mineralogical Magazine, 41 (317) 130-131 doi:10.1180/minmag.1977.041.317.21
 
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