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sveinbergeite

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Journal Article
Published: 01 October 2011
Mineralogical Magazine (2011) 75 (5): 2687–2702.
...A. P. Khomyakov; F. Cámara; E. Sokolova; Y. Abdu; F. C. Hawthorne Abstract Sveinbergeite, Ca( \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \(\mathrm{Fe}_{6}^{2+}\) \end{document} Fe 3...
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Journal Article
Published: 01 August 2012
Mineralogical Magazine (2012) 76 (4): 863–882.
..., nalivkinite, tarbagataite, kupletskite, niobokupletskite and kupletskite-(Cs); the type-2 structure occurs in magnesioastrophyllite, sveinbergeite and devitoite. The general formulae for the eight astrophyllite-group minerals (astrophyllite, niobophyllite, nalivkinite, tarbagataite, kupletskite...
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General view of the crystal structures of ( a ) lobanovite, ( b ) sveinberg...
Published: 01 February 2017
Fig. 4. General view of the crystal structures of ( a ) lobanovite, ( b ) sveinbergeite and ( c ) devitoite. Legend as in Fig. 2 ; the Mg and Na octahedra are pink and navy blue, the [5]-coordinated Fe 3+ polyhedra are yellow; Ca (at the B site in sveinbergeite) and Ba (at the A and B
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General view of the crystal structures of ( a ) lobanovite, ( b ) sveinberg...
Published: 01 February 2017
Fig. 4. General view of the crystal structures of ( a ) lobanovite, ( b ) sveinbergeite and ( c ) devitoite. Legend as in Fig. 2 ; the Mg and Na octahedra are pink and navy blue, the [5]-coordinated Fe 3+ polyhedra are yellow; Ca (at the B site in sveinbergeite) and Ba (at the A and B
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General view of the crystal structures of ( a ) <span class="search-highlight">sveinbergeite</span> and ( b ) dev...
Published: 01 August 2012
F ig . 3. General view of the crystal structures of ( a ) sveinbergeite and ( b ) devitoite. The T(=Si) tetrahedra and D(=Ti,Nb) octahedra are orange and pale yellow. The [5]-coordinated Fe 3+ polyhedra are yellow; Ca (at the B site in sveinbergeite) and Ba (at the A and B sites in devitoite
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<span class="search-highlight">Sveinbergeite</span> from Buer, Vesterøya, Sandefjord (from Svein A. Berge&#x27;s colle...
Published: 01 October 2011
F ig . 1. Sveinbergeite from Buer, Vesterøya, Sandefjord (from Svein A. Berge's collection): ( a ) rosette-like aggregates of lamellar crystals; photo by Frode Andersen; ( b ) an aggregate of bent crystals; SEM image by Harald Folvik.
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The IR spectrum of <span class="search-highlight">sveinbergeite</span>.
Published: 01 October 2011
F ig . 2. The IR spectrum of sveinbergeite.
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Mössbauer spectrum of <span class="search-highlight">sveinbergeite</span> collected at room temperature. The spe...
Published: 01 October 2011
F ig . 3. Mössbauer spectrum of sveinbergeite collected at room temperature. The spectrum is fitted with three sites, Fe 2+ (solid-line subspectrum, 67% relative area), Fe 3+ (dashed-line subspectrum, 25% relative area), and Fe 3+ impurity (dotted-line subspectrum, 8% relative area) using
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General view of the crystal structures of ( a ) <span class="search-highlight">sveinbergeite</span> and ( b ) ast...
Published: 01 October 2011
F ig . 4. General view of the crystal structures of ( a ) sveinbergeite and ( b ) astrophyllite. The Fe-dominant and Ti octahedra are green and yellow, respectively; Si tetrahedra are orange, Ca, Na and K atoms are shown as white, blue and green spheres, H 2 O groups and OH groups and F atoms
Journal Article
Published: 01 February 2017
Mineralogical Magazine (2017) 81 (1): 143–153.
...Fig. 4. General view of the crystal structures of ( a ) lobanovite, ( b ) sveinbergeite and ( c ) devitoite. Legend as in Fig. 2 ; the Mg and Na octahedra are pink and navy blue, the [5]-coordinated Fe 3+ polyhedra are yellow; Ca (at the B site in sveinbergeite) and Ba (at the A and B...
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Journal Article
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 870–875.
...: description and crystal structure. Canadian Mineralogist, 50, 523–529. This New Mineral Names has entries for nine new minerals, including clinometaborite, hughesite, kirchhoffite, mendeleevite-(Ce), parasterryite (along with new data for sterryite), rusinovite, sveinbergeite, törnroosite...
Journal Article
Published: 01 October 2010
Mineralogical Magazine (2010) 74 (5): 859–862.
... description It is still a requirement for the authors to publish a full description of the new mineral. NO OTHER INFORMATION WILL BE RELEASED BY THE COMMISSION Sveinbergeite Ca( \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts...
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Short range order (SRO) arrangements around the  X  site in the crystal str...
Published: 01 October 2011
F ig . 5. Short range order (SRO) arrangements around the X site in the crystal structure of sveinbergeite: ( a ) the X site is occupied by an OH group where it receives bond valence from the Ti atom at the D site and three Ca atoms at the B (1) sites, and there is a hydrogen bond to an H
Journal Article
Published: 01 March 2019
The Canadian Mineralogist (2019) 57 (2): 201–213.
...; r = 1,2; A = K, Cs, Ba, H 2 O, Li, Rb, Pb 2+ , Na, □; B = Na, Ca, Ba, H 2 O (only in sveinbergeite), □; W A = H 2 O, □, and I represents the composition of the central part of the I block, e.g ., (PO 4 ) 2 (CO 3 ) in devitoite; X O D = O; X O A = OH, F; X P D = F, O, OH, H 2 O, □, where...
FIGURES
Journal Article
Published: 01 April 2018
Mineralogical Magazine (2018) 82 (2): 243–255.
... Fe}_{\rm 7}^{{\rm 2 +}} $ Fe 3+ 2 (Si 4 O 12 ) 2 (PO 4 ) 2 (CO 3 ) O 2 (OH) 4 □ 2 2 2 0 (8) Sveinbergeite (H 2 O) 2 [Ca(H 2 O)] ( ${\rm Fe}_{\rm 6}^{{\rm 2 +}} $ Fe 3+ ) Ti 2 (Si 4 O 12 ) 2 O 2 (OH) 4 [(OH)(H 2 O)] 1 2 2 (9) Lobanovite K 2 Na...
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Journal Article
Published: 01 November 2016
The Canadian Mineralogist (2016) 54 (6): 1539–1547.
...) . Khomyakov, A.P., Cámara, F., Sokolova, E., Hawthorne, F.C., & Abdu, Y. (2011) Sveinbergeite, Ca(Fe 2+ 6 Fe 3+ )Ti 2 (Si 4 O 12 ) 2...
FIGURES
Journal Article
Published: 01 January 2016
The Canadian Mineralogist (2016) 54 (1): 33–48.
... includes sveinbergeite, (H 2 O) 2 [Ca(H 2 O)](Fe 2+ 6 Fe 3+ )Ti 2 (Si 4 O 12 ) 2 O 2 (OH) 4 [(OH)(H 2 O)] ( Khomyakov et al . 2011 ); devitoite, Ba 6 Fe 2+ 7 Fe 3+ 2 (Si 4 O 12 ) 2 (PO 4 ) 2 (CO 3 )O 2 (OH) 4 ( Kampf et al . 2010 ); and lobanovite, K 2 Na(Fe 2+ 4 Mg 2 Na)Ti 2 (Si 4 O 12 ) 2 O 2 (OH...
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Journal Article
Published: 01 October 2014
European Journal of Mineralogy (2014) 26 (5): 689–700.
... are deformed (with undulose extinction) and twinned. The presence of similar coating on crystals was described for sveinbergeite, an astrophyllite-group mineral ( Khomyakov et al. , 2011 ). Numerous crystals were examined before we found a suitable single crystal for the structure refinement; this crystal...
FIGURES
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Detailed ideal formulae of the form A 2p B r C 7 D 2 (T 4 O 12 ) 2 I   W A2...
Published: 01 February 2017
) 2 (PO 4 ) 2 (CO 3 ) O 2 (OH) 4 □ 2 2 2 0  Sveinbergeite (H 2 O) 2 [Ca(H 2 O)] ( Fe 3+ ) Ti 2 (Si 4 O 12 ) 2 O 2 (OH) 4 [(OH)(H 2 O)] 1 2 2  Lobanovite K 2 Na ( Mg 2 Na) Ti 2 (Si 4 O 12 ) 2 O 2 (OH) 4 □ 1 1 0 *Data are taken from
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Detailed ideal formulae of the form A 2p B r C 7 D 2 (T 4 O 12 ) 2 I   W A2...
Published: 01 February 2017
) 2 (PO 4 ) 2 (CO 3 ) O 2 (OH) 4 □ 2 2 2 0  Sveinbergeite (H 2 O) 2 [Ca(H 2 O)] ( Fe 3+ ) Ti 2 (Si 4 O 12 ) 2 O 2 (OH) 4 [(OH)(H 2 O)] 1 2 2  Lobanovite K 2 Na ( Mg 2 Na) Ti 2 (Si 4 O 12 ) 2 O 2 (OH) 4 □ 1 1 0 *Data are taken from