| Reference Type | Journal (article/letter/editorial) |
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| Title | Crystal chemistry of fluorcarletonite, a new mineral from the Murun alkaline complex (Russia) |
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| Journal | European Journal of Mineralogy |
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| Authors | Kaneva, Ekaterina | Author |
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| Radomskaya, Tatiana | Author |
| Suvorova, Ludmila | Author |
| Sterkhova, Irina | Author |
| Mitichkin, Mikhail | Author |
| Year | 2020 (January 29) | Volume | 32 |
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| Issue | 1 |
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| Publisher | Copernicus GmbH |
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| Download URL | https://ejm.copernicus.org/articles/32/137/2020/ejm-32-137-2020.pdf+ |
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| DOI | doi:10.5194/ejm-32-137-2020Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 129895 | Long-form Identifier | mindat:1:5:129895:0 |
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| GUID | 0 |
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| Full Reference | Kaneva, Ekaterina, Radomskaya, Tatiana, Suvorova, Ludmila, Sterkhova, Irina, Mitichkin, Mikhail (2020) Crystal chemistry of fluorcarletonite, a new mineral from the Murun alkaline complex (Russia) European Journal of Mineralogy, 32 (1) 137-146 doi:10.5194/ejm-32-137-2020 |
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| Plain Text | Kaneva, Ekaterina, Radomskaya, Tatiana, Suvorova, Ludmila, Sterkhova, Irina, Mitichkin, Mikhail (2020) Crystal chemistry of fluorcarletonite, a new mineral from the Murun alkaline complex (Russia) European Journal of Mineralogy, 32 (1) 137-146 doi:10.5194/ejm-32-137-2020 |
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| In | (2020) European Journal of Mineralogy Vol. 32 (1) Schweizerbart |
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| Abstract/Notes | This paper reports the first description of the crystal structure and crystal chemical features of fluorcarletonite, a new mineral from the Murun potassium alkaline complex (Russia), obtained by means of single-crystal and powder X-ray diffraction (XRD), electron microprobe analysis (EMPA), thermogravimetry (TG), differential scanning calorimetry (DSC), and Fourier transform infrared (FTIR) spectroscopy. The crystal structure of fluorcarletonite, KNa4Ca4Si8O18(CO3)4(F,OH)·H2O, a rare phyllosilicate mineral, contains infinite double-silicate layers composed of interconnected four- and eight-membered rings of SiO4 tetrahedra and connected through the interlayer K-, Na- and Ca-centered polyhedra and CO3 triangles. The X-ray diffraction analysis confirms the mineral to be tetragonal, P4∕mbm, a=13.219(1) Å, c=16.707(2) Å, V=2919.4(6) Å3 (powder XRD data), a=13.1808(5) Å, c=16.6980(8) Å, V=2901.0(3) Å3 (single-crystal XRD data, 100 K). The EMPA (average from 10 analyses) gave the following composition (wt %): SiO2 44.1(6), CaO 20.0(3), Na2O 11.1(3), K2O 4.5(2), F 1.3(5), TiO2 0.1(1) and Al2O3 0.03(3). The TG–DSC analysis confirmed the presence of H2O and CO2 (weight losses of 1.17 % and 14.9 %, respectively). The FTIR spectrum acquired in the range from 4000 to 400 cm−1 reveals the presence of H2O, CO3 and OH groups. The average formula of fluorcarletonite calculated from the results of EMPA and crystal structure refinement is K1.04Na3.89Ca3.87Ti0.01Si7.99Al0.01O18(CO3)3.86(F0.72OH0.28)·1.11H2O. |
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