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filatovite

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Journal Article
Published: 27 February 2024
Mineralogical Magazine (2024) 88 (2): 176–184.
...Liudmila A. Gorelova; Oleg S. Vereshchagin; Vladimir N. Bocharov; Nadezhda V. Potekhina (née Shchipalkina); Elena S. Zhitova; Igor V. Pekov Abstract The high-temperature behaviour of a feldspar-group mineral, filatovite (with the simplified formula: K(Al,Zn) 2 (As,Si) 2 O 8 ), in which the Al:As:Si...
FIGURES | View All (4)
Journal Article
Published: 01 May 2004
European Journal of Mineralogy (2004) 16 (3): 533–536.
...Lidiya P. VERGASOVA; Sergey V. KRIVOVICHEV; Sergey N. BRITVIN; Peter C. BURNS; Vladimir V. ANANIEV Abstract Filatovite, ideally K[(Al,Zn) 2 (As,Si) 2 O 8 ], has been found in products of fumarolic activity on the second cinder cone of the North breach of the great fissure Tolbachik eruption (1975...
FIGURES
Journal Article
Published: 01 May 2004
European Journal of Mineralogy (2004) 16 (3): 537–543.
...Stanislav K. FILATOV; Sergey V. KRIVOVICHEV; Peter C. BURNS; Liidiya P. VERGASOVA Abstract The crystal structure of filatovite, K[(Al,Zn) 2 (As,Si) 2 O 8 ] (monoclinic, I 2/ c , a = 8.772(1), b = 13.370(2), c = 14.690(2) Å, β = 115.944(6)°, V = 1549.1(4) Å 3 ) has been solved by direct methods...
FIGURES
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SEM image of the intergrown crystals of <span class="search-highlight">filatovite</span> (a) and backscattered el...
Published: 01 May 2004
Fig. 1. SEM image of the intergrown crystals of filatovite (a) and backscattered electron image of one of the filatovite grains used for chemical analyses (b). The difference in color in (b) is caused by a variable As content.
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The crystal structure of <span class="search-highlight">filatovite</span> projected along the  b  axis (a) (displ...
Published: 01 May 2004
Fig. 1. The crystal structure of filatovite projected along the b axis (a) (displacement ellipsoids are drawn at 50% probability level) and the distribution of (Al,Zn) (open circles) and (As,Si) (filled circles in tetrahedral framework of filatovite (b).
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Bond distances in <span class="search-highlight">filatovite</span> at different temperatures.
Published: 27 February 2024
Table 4. Bond distances in filatovite at different temperatures.
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Crystallographic data and refinement parameters for <span class="search-highlight">filatovite</span> at different...
Published: 27 February 2024
Table 3. Crystallographic data and refinement parameters for filatovite at different temperatures.
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Unit-cell parameters of <span class="search-highlight">filatovite</span> at different temperatures. Errors are sm...
Published: 27 February 2024
Figure 3. Unit-cell parameters of filatovite at different temperatures. Errors are smaller than symbols.
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Chemical composition of <span class="search-highlight">filatovite</span>
Published: 01 May 2004
Table 1. Chemical composition of filatovite
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Crystallographic data and refinement parameters for <span class="search-highlight">filatovite</span>.
Published: 01 May 2004
Table 1. Crystallographic data and refinement parameters for filatovite.
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Powder X-ray diffraction data of <span class="search-highlight">filatovite</span>.
Published: 01 May 2004
Table 2. Powder X-ray diffraction data of filatovite.
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The structures of arsenates with infinite frameworks of tetrahedra: (a) fil...
Published: 01 January 2014
Figure 36 The structures of arsenates with infinite frameworks of tetrahedra: (a) filatovite, (b) alarsite.
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Atomic coordinates and displacement parameters (Å 2 ) for <span class="search-highlight">filatovite</span>.
Published: 01 May 2004
Table 2. Atomic coordinates and displacement parameters (Å 2 ) for filatovite.
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Selected bond lengths (Å) and angles (°) in the structure of <span class="search-highlight">filatovite</span>.
Published: 01 May 2004
Table 3. Selected bond lengths (Å) and angles (°) in the structure of filatovite.
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Chemical composition of <span class="search-highlight">filatovite</span> (No 1; our data) and As-rich potassic fe...
Published: 27 February 2024
Table 2. Chemical composition of filatovite (No 1; our data) and As-rich potassic feldspar from the Arsenatnaya fumarole (No 2; Shchipalkina et al ., 2020b ). Note: bdl – below detection limit
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Coordination of K +  cation in the structure of <span class="search-highlight">filatovite</span>. Displacement el...
Published: 01 May 2004
Fig. 2. Coordination of K + cation in the structure of filatovite. Displacement ellipsoids are drawn at 50% probability level.
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Raman spectra of <span class="search-highlight">filatovite</span> (a) under ambient conditions; (b) at different ...
Published: 27 February 2024
Figure 1. Raman spectra of filatovite (a) under ambient conditions; (b) at different temperatures from 70 to 1500 cm –1 ; and (c) temperature evolution of 12 selected Raman bands. The errors are smaller than the size of the symbols.
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Extent of the Al 3+  + (P,As) 5+  = 2Si 4+  substitution in natural filatov...
Published: 01 January 2014
Figure 3 Extent of the Al 3+ + (P,As) 5+ = 2Si 4+ substitution in natural filatovite specimens from Tobalchik volcano, Russia. Redrawn from Kotelnikov et al. (2011) .
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Geometrical parameters of the structure of <span class="search-highlight">filatovite</span> compared to the struc...
Published: 01 May 2004
Table 5. Geometrical parameters of the structure of filatovite compared to the structures of celsian, Sr[Al 2 Si 2 O 8 ], and Pb[Al 2 Si 2 O 8 ] * .
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Crystal structure of <span class="search-highlight">filatovite</span> in different projections with averaged ther...
Published: 27 February 2024
Figure 2. Crystal structure of filatovite in different projections with averaged thermal expansion section (black parts of the sections demonstrate the negative thermal expansion). AlO 4 and (Si,As)O 4 tetrahedra are given in orange and yellow, respectively; M ( M  = K and Na) atoms are shown