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bikitaite

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Journal Article

Dehydration dynamics of bikitaite: Part I. In situ synchrotron powder X-ray diffraction study

Orazio Ferro, Simona Quartieri, Giovanna Vezzalini, Chiara Ceriani, Ettore Fois, Aldo Gamba, Giuseppe Cruciani
Published: 01 January 2004
American Mineralogist (2004) 89 (1): 94–101.
DOI: https://doi.org/10.2138/am-2004-0112
...Orazio Ferro; Simona Quartieri; Giovanna Vezzalini; Chiara Ceriani; Ettore Fois; Aldo Gamba; Giuseppe Cruciani Abstract The thermal dehydration process of the natural Li zeolite bikitaite has been studied in situ by synchrotron radiation powder diffraction. The temperature-resolved experiments were...
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Journal Article

Dehydration dynamics of bikitaite: Part II. Ab initio molecular dynamics study

Chiara Ceriani, Ettore Fois, Aldo Gamba, Gloria Tabacchi, Orazio Ferro, Simona Quartieri, Giovanna Vezzalini
Published: 01 January 2004
American Mineralogist (2004) 89 (1): 102–109.
DOI: https://doi.org/10.2138/am-2004-0113
...Chiara Ceriani; Ettore Fois; Aldo Gamba; Gloria Tabacchi; Orazio Ferro; Simona Quartieri; Giovanna Vezzalini Abstract High-temperature behavior and the process of thermal dehydration in the natural zeolite bikitaite have been studied by ab initio molecular dynamics simulations, and favorably...
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Journal Article

Effects of pressure on the structure of bikitaite

Paola COMODI, Giacomo Diego GATTA, Pier Francesco ZANAZZI
Published: 01 March 2003
European Journal of Mineralogy (2003) 15 (2): 247–255.
DOI: https://doi.org/10.1127/0935-1221/2003/0015-0247
...Paola COMODI; Giacomo Diego GATTA; Pier Francesco ZANAZZI Abstract The structural behaviour of bikitaite, Li 2 (Al 2 Si 4 O 12 ). 2H 2 O, was investigated under hydrostatic pressure using X-ray single-crystal diffraction data. A Merrill-Bassett diamond anvil cell was mounted with glycerol, as non...
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Journal Article

High-pressure behavior of bikitaite: An integrated theoretical and experimental approach

Orazio Ferro, Simona Quartieri, Giovanna Vezzalini, Ettore Fois, Aldo Gamba, Gloria Tabacchi
Published: 01 October 2002
American Mineralogist (2002) 87 (10): 1415–1425.
DOI: https://doi.org/10.2138/am-2002-1018
...Orazio Ferro; Simona Quartieri; Giovanna Vezzalini; Ettore Fois; Aldo Gamba; Gloria Tabacchi Abstract Pressure-induced structural modifications in the zeolite bikitaite are studied by means of in situ synchrotron X-ray powder diffraction and ab initio molecular dynamics. The experimental cell...
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Journal Article

Raman spectroscopic study of H 2 O in bikitaite: “One-dimensional ice”

Boris A. Kolesov, Charles A. Geiger
Published: 01 October 2002
American Mineralogist (2002) 87 (10): 1426–1431.
DOI: https://doi.org/10.2138/am-2002-1019
...Boris A. Kolesov; Charles A. Geiger Abstract The zeolite bikitaite, Li 2 [Al 2 Si 4 O 12 ]·2H 2 O, has structural channels containing infinite chains of H 2 O molecules running parallel to [010]. One hydrogen atom of an H 2 O molecule is weakly hydrogen bonded to an O atom of a neighboring molecule...
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View PDF for article title, Raman spectroscopic study of H 2 O in <span class="search-highlight">bikitaite</span>: “One-dimensional ice”
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Journal Article

The Crystal Structure of Bikitaite, Li[AlSi 2 O 6 ]·H 2 O

Vladimir Kocman, Robert I. Gait, John Rucklidge
Published: 01 February 1974
American Mineralogist (1974) 59 (1-2): 71–78.
...Vladimir Kocman; Robert I. Gait; John Rucklidge Abstract The crystal structure of bikitaite, LiAlSi 2 O 6 ·H 2 O, has been determined from three-dimensional Mo K α counter data by direct methods and refined by full matrix least-squares calculations using anisotropic temperature factors...
View PDF for article title, The Crystal Structure of <span class="search-highlight">Bikitaite</span>, Li[AlSi 2 O 6 ]·H 2 O
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Journal Article

A Synthesis of Bikitaite

D. J. Drysdale
Published: 01 October 1971
American Mineralogist (1971) 56 (9-10): 1718.
...D. J. Drysdale Abstract Bikitaite has been synthesized from gels in the Li 2 O-Al 2 O 3 -SiO 2 H 2 O system at 2 kbar P H 2 O at temperatures between 300 and 350°C. 5 11 1970 27 3 1971 Copyright © 1971 by the Mineralogical Society of America 1971 Mineralogical Society of America ...
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Journal Article

Eucryptite and bikitaite from King—s Mountain, North Carolina

Peter B. Leavens, C. S. Hurlbut, Jr., Joseph A. Nelen
Published: 01 August 1968
American Mineralogist (1968) 53 (7-8): 1202–1207.
...Peter B. Leavens; C. S. Hurlbut, Jr.; Joseph A. Nelen Abstract Vein fillings in the King's Mountain pegmatite yield good eucryptite crystals with a =13.490, c = 9.016±0.007 Å, a:c = 1:0.6684 (X-ray), 1:0.6685 (morph.). Bikitaite had a = 8.614, b = 4.957, c 7.603 ± 0.022 Å, β=114° 19.3′ (X-ray...
View PDF for article title, Eucryptite and <span class="search-highlight">bikitaite</span> from King—s Mountain, North Carolina
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Journal Article

Additional data on bikitaite

Cornelius S. Hurlbut, Jr.
Published: 01 August 1958
American Mineralogist (1958) 43 (7-8): 768–770.
...Cornelius S. Hurlbut, Jr. Abstract A new mineral, bikitaite, LiAl 2 O 6 ·H 2 O, was described in the November-December, 1957 American Mineralogist .* The description was made on fine grained material interstitial to granular eucryptite and quartz. The largest fragments of single crystals were...
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Journal Article

Bikitaite, LiAlSi 2 O 6 ·H 2 O, A New Mineral from Southern Rhodesia

Cornelius S. Hurlbut, Jr.
Published: 01 December 1957
American Mineralogist (1957) 42 (11-12): 792–797.
...Cornelius S. Hurlbut, Jr. Abstract Bikitaite, LiAlSi 2 O 6 ·H 2 O is a new mineral from the lithium-rich pegmatites at Bakita, Southern Rhodesia. It occurs as a late mineral interstitial to granular eucryptite. No crystals were observed. X -ray study yields: monoclinic; a 0 = 8.63 Å, b 0 = 4.95, c...
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Journal Article

Enumeration of 4-connected 3-dimensional nets and classification of framework silicates; III, Combination of helix, and zigzag, crankshaft and saw chains with simple 2D nets

J. V. Smith
Published: 01 June 1979
American Mineralogist (1979) 64 (5-6): 551–562.
..., the nets for bikitaite (6 3 net + saw + crankshaft), scapolite (4.8 2 net + saw + crankshaft), and offretite (4.6.12 net + saw) are particularly interesting. Bikitaite contains hexagonal sheets, and scapolite and bikitaite contain 5-rings. Bikitaite can also be described as the combination of zigzags...
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Unit-cell volumes, normalized to room condition values, vs. pressure for YUGA and ZEOA (this work), heulandite (Vezzalini et al. 2001), scolecite (Ballone et al. 2002), and bikitaite (Ferro et al. 2002). The bulk modulus was calculated up to 6.8, 3.5, 4.0, 5.7, and 5.0 GPa for ZEOA, heulandite, YUGA, bikitaite, and scolecite, respectively.

Unit-cell volumes, normalized to room condition values, vs. pressure for YU...

Published: 01 October 2003
F igure 6. Unit-cell volumes, normalized to room condition values, vs. pressure for YUGA and ZEOA (this work), heulandite ( Vezzalini et al. 2001 ), scolecite ( Ballone et al. 2002 ), and bikitaite ( Ferro et al. 2002 ). The bulk modulus was calculated up to 6.8, 3.5, 4.0, 5.7, and 5.0 GPa
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Contour plots of the electronic density of bikitaite at ambient pressure (a) and at 9.0 GPa (b) superimposed on the corresponding average bikitaite structure projected on the ac plane. Black spheres represent H atoms, light gray spheres Si atoms, gray spheres O atoms, and dark gray spheres Al and Li atoms. The gray shading indicates regions in which the electronic density is significantly different from 0; the darker the color, the higher the density.

Contour plots of the electronic density of bikitaite at ambient pressure ( ...

Published: 01 October 2002
F igure 8. Contour plots of the electronic density of bikitaite at ambient pressure ( a ) and at 9.0 GPa ( b ) superimposed on the corresponding average bikitaite structure projected on the ac plane. Black spheres represent H atoms, light gray spheres Si atoms, gray spheres O atoms, and dark
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Thermogravimetric curves for bikitaite.

Thermogravimetric curves for bikitaite.

Published: 01 January 2004
F igure 1. Thermogravimetric curves for bikitaite.
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Details of data collection and refinement of bikitaite.

Published: 01 March 2003
Table 1. Details of data collection and refinement of bikitaite.
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Strain ellipsoid orientation of bikitaite in glycerol.

Strain ellipsoid orientation of bikitaite in glycerol.

Published: 01 March 2003
Fig. 3. Strain ellipsoid orientation of bikitaite in glycerol.
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Sheets built by six-membered rings in the mordenite group. (a) (100) sheet in mordenite; half of the tetrahedral apices are pointing up and half are pointing down. (b) (100) sheet in dachi-ardite. Sheets with the same arrangement of tetrahedral apices also exist parallel to (010) in epistilbite and parallel to (100) in ferrierite. (c) The tridymite-type sheet parallel to (001) in bikitaite. The sheet is decorated with pyroxene-type tetrahedral chains extending parallel to the b-axis. Tetrahedra in the chains are filled with Si; those in the sheet of triclinic bikitaite are filled alternately with Si (light tetrahedra with black rims) and Al (dark tetrahedra with light rims).

Sheets built by six-membered rings in the mordenite group. (a) (100) sheet ...

Published: 01 January 2001
) in epistilbite and parallel to (100) in ferrierite. (c) The tridymite-type sheet parallel to (001) in bikitaite. The sheet is decorated with pyroxene-type tetrahedral chains extending parallel to the b -axis. Tetrahedra in the chains are filled with Si; those in the sheet of triclinic bikitaite are filled
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Lattice parameters and volumes of bikitaite in glycerol at different pressu...

Published: 01 March 2003
Table 2a. Lattice parameters and volumes of bikitaite in glycerol at different pressures.
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Strain tensor components of bikitaite in glycerol and silicon-oil.

Published: 01 March 2003
Table 5. Strain tensor components of bikitaite in glycerol and silicon-oil.
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Integrated powder patterns of bikitaite as a function of pressure.

Integrated powder patterns of bikitaite as a function of pressure.

Published: 01 October 2002
F igure 1. Integrated powder patterns of bikitaite as a function of pressure.