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bafertisite

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Journal Article
Published: 01 January 2016
The Canadian Mineralogist (2016) 54 (1): 49–63.
...Fernando CÁmara; Elena Sokolova; Yassir A. Abdu; Leonid A. Pautov Abstract The crystal structure and chemical formula of bafertisite, Ba 2 Fe 2+ 4 Ti 2 (Si 2 O 7 ) 2 O 2 (OH) 2 F 2 , have been revised. Three samples of bafertisite were studied using electron-microprobe analysis, Mössbauer...
FIGURES | View All (5)
Journal Article
Published: 01 October 2001
The Canadian Mineralogist (2001) 39 (5): 1307–1316.
... (Ti,Fe)[Ti 2 (O,OH) 4 Si 4 O 14 ](H 2 O,OH) 2 }, space group A 2/ m , a 5.327(2), b 6.856(2), c 21.51(3) Å, β 93.80(4)°, Z = 2, D calc. = 3.815 g/cm 3 , belongs to a large group of bafertisite-like structures characterized by an ideally octahedral ( O ) sheet sandwiched between two heteropolyhedral...
FIGURES
Journal Article
Published: 01 February 1992
European Journal of Mineralogy (1992) 4 (1): 35–43.
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<span class="search-highlight">Bafertisite</span> group: linkage 2 of H and O sheets in <span class="search-highlight">bafertisite</span> ( a ), the ba...
Published: 01 December 2017
Fig. 4. Bafertisite group: linkage 2 of H and O sheets in bafertisite ( a ), the basic crystal structures of bobshannonite ( b ), bafertisite ( c ) and yoshimuraite ( d ). Legend as in Fig. 2 ; Ti (+ Nb), Fe 2+ and Mn polyhedra are pale yellow, green and magenta, respectively; Ba, K and Na
Journal Article
Published: 01 December 2001
The Canadian Mineralogist (2001) 39 (6): 1665–1673.
...) 2 O 2 Si 4 O 14 ] (F,OH) 2 }PO 4 , is monoclinic I 11 b , a 5.498(4), b 7.120(6), c 47.95(4) Å, γ 88.4(1)°; Z = 4. By comparison with structural and chemical data for titanosilicates based on a bafertisite-like layer (heterophyllosilicates), a model of the structure of bornemanite has been obtained...
FIGURES
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Group II: crystal structures of (a) bobshannonite and (b) <span class="search-highlight">bafertisite</span> and d...
Published: 01 January 2016
Fig. 5. Group II: crystal structures of (a) bobshannonite and (b) bafertisite and details of the structures: H sheet in (c) bobshannonite and (d) bafertisite and a close-packed layer of (e) Ba, K, and Na atoms in bobshannonite and (f) Ba atoms in bafertisite. Legend as in Figure 4 , PO 4
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The derivative (D) structure of cámaraite (<span class="search-highlight">bafertisite</span> group) ( a ) can be ...
Published: 01 December 2017
Fig. 7. The derivative (D) structure of cámaraite (bafertisite group) ( a ) can be built of the fragments of the basic (B) structures of the minerals of the same group: bafertisite ( b ) and jinshajiangite ( c ). Legend as in Fig. 4 .
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View along [100] of the crystal structure of <span class="search-highlight">bafertisite</span> (a), vuonnemite (b...
Published: 01 January 2005
Figure 6. View along [100] of the crystal structure of bafertisite (a), vuonnemite (b) and surkhobite (c). Whereas in bafertisite and surkhobite the two H sheets of a HOH layer have a relative shift along [010], in vuonnemite this shift is absent. When a discrimination between the two types
Journal Article
Published: 14 June 2021
The Canadian Mineralogist (2021) 59 (2): 365–379.
...Elena Sokolova; Maxwell C. Day; Frank C. Hawthorne; Atali A. Agakhanov; Fernando Cámara; Yulia A. Uvarova; Giancarlo Della Ventura ABSTRACT The crystal structure of perraultite from the Oktyabr'skii massif, Donetsk region, Ukraine (bafertisite group, seidozerite supergroup), ideally NaBaMn 4 Ti 2...
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High-resolution TEM image of cámaraite (Cam) slices in a <span class="search-highlight">bafertisite</span> (Baf) ...
Published: 01 January 2016
Fig. 1. High-resolution TEM image of cámaraite (Cam) slices in a bafertisite (Baf) matrix. The zone axis is [1 ¯ 10]. The upper right inset shows an SAED (selected area electron diffraction) image of bafertisite (after Cámara et al . 2009 ).
Journal Article
Published: 16 January 2020
The Canadian Mineralogist (2020) 58 (1): 19–43.
...Elena Sokolova; Frank C. Hawthorne; Fernando Cámara; Giancarlo Della Ventura; Yulia A. Uvarova ABSTRACT The crystal structures of the three perraultite-type minerals (bafertisite group, seidozerite supergroup)—jinshajiangite from Norra Kärr, Sweden, ideally NaBaFe 2+ 4 Ti 2 (Si 2 O 7 ) 2 O 2 (OH) 2...
FIGURES
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TOT  layer of a phyllosilicate (a) as transformed, by periodic substitution...
Published: 01 January 2005
Figure 3. TOT layer of a phyllosilicate (a) as transformed, by periodic substitution of rows of octahedra (dark grey) for tetrahedra, to HOH heterophyllosilicate layers typical of bafertisite (b), astrophyllite (c) and nafertisite (d). B bafertisite-type and M mica-type modules are shown
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Group II. Chemical composition and stereochemistry of the H sheet and  P  s...
Published: 01 December 2006
F ig . 11. Group II. Chemical composition and stereochemistry of the H sheet and P sites. The H sheet is viewed perpendicular to the plane of the TS block in: (a) bafertisite and (b) yoshimuraite, and viewed along the t 2 translation in bafertisite (c) and yoshimuraite (d). Legend
Journal Article
Published: 01 June 2000
The Canadian Mineralogist (2000) 38 (3): 649–656.
... relatively weak and resulting in the pronounced {001} cleavage observed in the mineral. Yoshimuraite is a member of the BM n heterophyllosilicate polysomatic series [specifically, the BM 0 poly-some series], which includes phases such as astrophyllite, bafertisite and seidozerite. Abstract Nous avons résolu...
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MISCELLANEOUS REFINEMENT DATA FOR <span class="search-highlight">BAFERTISITE</span>
Published: 01 January 2016
TABLE 3. MISCELLANEOUS REFINEMENT DATA FOR BAFERTISITE
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High-resolution TEM image of cámaraite (Cam) slices in a <span class="search-highlight">bafertisite</span> (Baf)...
Published: 01 October 2009
F ig . 3. High-resolution TEM image of cámaraite (Cam) slices in a bafertisite (Baf) matrix. The zone axis is [ \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \({\bar{1}}\) \end
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FTIR spectrum of <span class="search-highlight">bafertisite</span> from Kola.
Published: 01 January 2016
Fig. 3. FTIR spectrum of bafertisite from Kola.
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Raman spectrum of <span class="search-highlight">bafertisite</span> from Kola.
Published: 01 January 2016
Fig. 4. Raman spectrum of bafertisite from Kola.
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CHEMICAL ANALYSIS AND FORMULA UNIT FOR <span class="search-highlight">BAFERTISITE</span>
Published: 01 January 2016
TABLE 2. CHEMICAL ANALYSIS AND FORMULA UNIT FOR BAFERTISITE
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HYDROGEN BONDING IN <span class="search-highlight">BAFERTISITE</span> FROM KOLA
Published: 01 January 2016
TABLE 8. HYDROGEN BONDING IN BAFERTISITE FROM KOLA