dioctahedral

dioctahedral

[‚dī‚äk·tə′hē·drəl]
(crystallography)
Pertaining to a crystal structure in which only two of the three available octahedrally coordinated positions are occupied.
(mathematics)
Having 16 faces.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Stucki JW, Golden DC, Roth CB (1984) Effects of reduction and reoxidation of structural iron on the surface charge and dissolution of dioctahedral smectites.
Comparative FT-IR study of structural modifications during acid treatment of dioctahedral smectites and hectorite, Spectrochim Acta A 54: 1397-1406.
The dioctahedral smectite used in this work is a reference montmorillonite sample (SWy-2) from the Source Clays Repository of The Clay Minerals Society [34].
Host Materials, A dioctahedral smectite SWy-2 originated from bentonites of Wyoming (USA) is selected for the present study.
The 060 reflection at 1.50 A confirms that the clay was a dioctahedral smectite, based on this signal in the interval 1.492 [Angstrom] to 1.504 [Angstrom], typical of montmorillonite [36, 48].
Grauby, "Hydrothermal synthesis of dioctahedral smectites: the Al-[Fe.sup.3+] chemical series.
The occupation of the structural positions in the octahedral sheet generates trioctahedral sheet silicates where each O or OH is surrounded by 3 divalent cations, like Fe(II) or Mg(II), and dioctahedral sheet silicates where each O or OH ion is surrounded by 2 trivalent cations, mostly Al(III) [5].
Delvaux, "Comparative efficacy of dioctahedral smectite (Smecta[R]) and a probiotic preparation in chronic functional diarrhoea," Digestive and Liver Disease, vol.
and Parry, W.T.: 1986, Dioctahedral corrensite from Permian red beds, Lisbon Valley, Utah.
The band in 3615 [cm.sup.-1] for the Pal-1 spectrum can be attributed to the stretching vibrations of Mg-OH from the dioctahedral units.
Drits, "The distribution of octahedral cations in the 2:1 layers of dioctahedral smectites studied by oblique-texture electron diffraction," Clay Minerals, vol.