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wightmanite

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Journal Article
Published: 14 June 2021
The Canadian Mineralogist (2021) 59 (2): 321–336.
...Bernard W. Liebich; Anthony R. Kampf; Edwin Gnos; Cédric Schnyder ABSTRACT The wallpaper-type crystal structure of wightmanite, Mg 5 (BO 3 )O(OH) 5 ·1–2H 2 O, has been reanalyzed in order to better understand the position and bonding of hydrogen atoms. Single-crystal structure refinement yielded...
FIGURES | View All (9)
Journal Article
Published: 01 October 1974
American Mineralogist (1974) 59 (9-10): 985–1004.
... preferential occupancy of Ti 4+ in the M (1) position. The proposed distributions are M (l) = 0.50 Mg 2+ + 0.12 Al 3+ + 0.04 Fe 3+ + 0.34 Ti 4+ and M (2) = 0.83 Mg 2+ + 0.09 Al 3+ + 0.08 Fe 3+ . Wightmanite, Mg 2+ 5 (O)(OH) 6 [BO 3 ]·~2H 2 O, Z = 4, a 13.46(2) Å, b 3.102(5)Å, c 18.17(2) Å, β 91.60(5...
Journal Article
Published: 01 June 1962
American Mineralogist (1962) 47 (5-6): 718–722.
...Joseph Murdoch Abstract A new magnesium borate found at Crestmore, California, has been named wightmanite, in honor of R. H. Wightman, Director of Exploration and Mining, Riverside Cement Company. It occurs as colorless, pseudohexagonal prisms, single or in radiating clusters, in a matrix...
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CRYSTAL DATA AND STRUCTURE REFINEMENT FOR <b>WIGHTMANITE</b> 66810
Published: 14 June 2021
TABLE 1. CRYSTAL DATA AND STRUCTURE REFINEMENT FOR WIGHTMANITE 66810
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Raman spectrum of <b>wightmanite</b> obtained with a 633 nm laser.
Published: 14 June 2021
Fig. 8. Raman spectrum of wightmanite obtained with a 633 nm laser.
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RAMAN AND FTIR BANDS ASSIGNMENTS FOR <b>WIGHTMANITE</b> NHMLAC 66810
Published: 14 June 2021
TABLE 7. RAMAN AND FTIR BANDS ASSIGNMENTS FOR WIGHTMANITE NHMLAC 66810
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ANISOTROPIC DISPLACEMENT PARAMETERS (Å 2  × 10 3 ) FOR <b>WIGHTMANITE</b> 66810
Published: 14 June 2021
TABLE 3. ANISOTROPIC DISPLACEMENT PARAMETERS (Å 2 × 10 3 ) FOR WIGHTMANITE 66810
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HYDROGEN COORDINATES (× 10 4 ) AND ISOTROPIC DISPLACEMENT PARAMETERS (Å 2  ...
Published: 14 June 2021
TABLE 4. HYDROGEN COORDINATES (× 10 4 ) AND ISOTROPIC DISPLACEMENT PARAMETERS (Å 2 × 10 3 ) FOR WIGHTMANITE 66810
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ATOMIC COORDINATES (× 10 4 ) AND EQUIVALENT ISOTROPIC DISPLACEMENT PARAMETE...
Published: 14 June 2021
TABLE 2. ATOMIC COORDINATES (× 10 4 ) AND EQUIVALENT ISOTROPIC DISPLACEMENT PARAMETERS (Å 2 × 10 3 ) FOR WIGHTMANITE 66810
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Infrared spectra of <b>wightmanite</b> obtained from the same crystal as used for ...
Published: 14 June 2021
Fig. 9. Infrared spectra of wightmanite obtained from the same crystal as used for the Raman spectrum. (A) Transmission spectrum. (B) Reflection spectrum. Most of the pronounced peaks can be attributed to OH and H 2 O vibrations. For discussion see the text.
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The crystal structure of <b>wightmanite</b> viewed along [010]. The longest dimens...
Published: 14 June 2021
Fig. 1. The crystal structure of wightmanite viewed along [010]. The longest dimension of the elementary cell is the c axis. O – H bonds shown as sticks. Two rows of H 2 O (large grey spheres oriented parallel [010]) occupy the center of the large, elliptical channels.
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Detail of <b>wightmanite</b> crystal structure, viewed along the  b  axis. Note th...
Published: 14 June 2021
Fig. 2. Detail of wightmanite crystal structure, viewed along the b axis. Note the special configuration of clusters of four edge-sharing MgO 6 octahedra connected to planar BO 3 triangles. They form sheet-like wallpaper-type layers with large elliptical channels oriented perpendicular
Journal Article
Published: 01 June 1963
American Mineralogist (1963) 48 (5-6): 678–683.
... was a dolomitic marble containing numerous prismatic crystals up to 5 mm by 1 mm in size. Thin sections of the rock showed the presence of two non-carbonate minerals. One was the new mineral wightmanite (Murdoch, 1962), and the other occurred as somewhat poikiloblastic crystals which were first taken...
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Selected wallpaper borate structures; ( a ) fluoborite; ( b ) warwickite; (...
Published: 01 August 2014
F ig . 6. Selected wallpaper borate structures; ( a ) fluoborite; ( b ) warwickite; ( c ) ludwigite; ( d ) pinakiolite; ( e ) karlite; ( f ) wightmanite; ( g ) suanite; ( h ) szaibélyite. Orange: (BO 3 ); green: (MgO 6 ); yellow: (FeO 6 ); turquoise circles: Cl; yellow circles: (H 2 O).
Journal Article
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 183–190.
... to that work, Moore & Araki (1974) described the structure in detail and related the warwickite structure to those of wightmanite and pinakiolite, describing the topology of the three atomic arrangements as “3 Å wallpaper structures”. A more recent refinement of the structure was provided by Bigi et al...
Journal Article
Published: 01 March 2004
European Journal of Mineralogy (2004) 16 (2): 361–366.
.... ( 1964 ): La gaudefroyite, une nouvelle espèce minérale . Bull. Soc. fr. Minéral. Cristallogr ., 87 , 216 – 229 Moore , P.B. & Araki , T. ( 1974 ): Pinakiolite, Mg 2 Mn 3+ O 2 [BO 3 ]; warwickite, Mg(Mg 0.5 Ti 0.5 )O[BO 3 ]; wightmanite, Mg 5 (O) (OH) 5 [BO 3 ] n H 2 O...
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Journal Article
Published: 01 February 2009
The Canadian Mineralogist (2009) 47 (1): 173–180.
... ]; wightmanite, Mg 5 (O) (OH) 5 [BO 3 ]·nH 2 O: crystal chemistry of complex 3Å wallpaper structures . Am. Mineral . 59 , 985 – 1004 . Shannon , R.D. ( 1976 ): Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides . Acta Crystallogr . A32...
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Journal Article
Published: 01 August 2001
The Canadian Mineralogist (2001) 39 (4): 1121–1130.
... to quenched metallurgical slags . Meas. Sci. Technol . 2 , 657 – 662 . Moore , P.B. & Araki , T. ( 1974 ): Pinakiolite, Mg 2 Mn 3+ O 2 [BO 3 ]; warwickite, Mg(Mg 0.5 Ti 0.5 )O[BO 3 ]; wightmanite, Mg 5 (O)(OH) 5 [BO 3 ]·nH 2 O: crystal chemistry of complex 3 Å wallpaper structures...
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Journal Article
Published: 01 January 2000
American Mineralogist (2000) 85 (1): 103–107.
... 0.5 Ti 0.5 )O[BO 3 ]; wightmanite Mg 5 O(OH) 5 [BO 3 ] n H 2 O: crystal chemistry of complex 3 Å wallpaper structures . American Mineralogist , 59 , 985 – 1004 . Moore , P.B. and Araki , T. ( 1976 ) Painite, CaZrB[Al 9 O 18 ]: its crystal structure and relation to jeremjevite, B 5...
FIGURES
Journal Article
Published: 01 October 2007
The Canadian Mineralogist (2007) 45 (5): 1307–1324.
... (ammonioborite, ekaterinite, garrelsite, sborgite and shabynite), Poor: 11 [azoproite, braitschite-(Ce), chelkarite, hambergite, peprossiite-(Ce), pinakiolite, sakhaite, satimolite, solongoite, tyretskite and wightmanite], and Incomplete data: 11. This is a relatively good distribution, with 84 (~64%) species...