Incorporation of sodium into the chlorite structure: the crystal structure of glagolevite, Na(Mg,Al)6[Si3AlO10](OH,O)8
-
Sergey V. Krivovichev
, Thomas Armbruster
Abstract
The crystal structure of glagolevite, Na(Mg,Al)6[Si3AlO10](OH,O)8, a new mineral from the Kovdor alkaline massif, Kola peninsula, Russia, has been solved and refined to R1 = 0.117, calculated from 1503 unique observed reflections (Fo ≥ 4σFo ), and to R1 = 0.118 for all 1550 unique reflections. The specimen contained several polytypes; the crystal studied yielded triclinic space group C1, a = 5.3580(11), b = 9.2810(19), c = 14.574(3) Å, α = 90.00(3), β = 97.08(3), γ = 90.00(3)°, V = 719.2(3) Å3. Glagolevite is the first mineral of the chlorite group that contains Na atoms located between the 2:1 layers and the interlayer octahedral sheets. The Na atoms are in sevenfold coordination. The Na(O,OH)7 polyhedron is a trigonal prism with one of the triangular bases extended to a square. The tetrahedral sheets show disorder owing to polytype intergrowths. Tetrahedral site occupancies correlate with the occupancies of the Na sites. The polytypic composition of the crystal studied is estimated at 57% IIb-6, 31% IIb-2, and 12% IIb-4.
© 2015 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Hydroxyl in omphacites and omphacitic clinopyroxenes of upper mantle to lower crustal origin beneath the Siberian platform
- Structural variations induced by difference of the inert pair effect in the stibnite-bismuthinite solid solution series (Sb,Bi)2S3
- Hydrogen solubility and speciation in natural, gem-quality chromian diopside
- Ultrastructure, aggregation-state, and crystal growth of biogenic nanocrystalline sphalerite and wurtzite
- Impactite from Henbury, Australia
- Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and “groutellite”
- Hydrothermal synthesis and crystal chemistry of the new strontium uranyl selenites, Sr[(UO2)3(SeO3)2O2]⋅4H2O and Sr[UO2(SeO3)2]
- Study of cation order-disorder in MgAl2O4spinel by in situ neutron diffraction up to 1600 K and 3.2 GPa
- Magnetic granulometry from equilibrium magnetization measurements: Mineral magnetometry of superparamagnetic particles and application to synthetic ferrihydrites
- Hydroxide in kyanite: A quantitative determination of the absolute amount and calibration of the IR spectrum
- Analysis of uranyl-bearing phases by EXAFS spectroscopy: Interferences, multiple scattering, accuracy of structural parameters, and spectral differences
- X-ray diffraction evidence for a monoclinic form of stibnite, Sb2S3, below 290 K
- Sulfur species at chalcopyrite (CuFeS2) fracture surfaces
- Dehydration and rehydration process in boggsite: An in situ X-ray single-crystal study
- Empressite, AgTe, from the Empress-Josephine mine, Colorado, U.S.A.: Composition, physical properties, and determination of the crystal structure
- Correlation of pH-dependent surface interaction forces to amino acid adsorption: Implications for the origin of life
- A near-infrared spectroscopic study of hydroxyl in natural chondrodite
- High-pressure elasticity of a natural magnetite crystal
- Isotopic and chemical alteration of zircon by metamorphic fluids: U-Pb age depth-profiling of zircon crystals from Barrowʼs garnet zone, northeast Scotland
- A novel approach to determine high-pressure high-temperature fluid and melt compositions using diamond-trap experiments
- Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, Galiléia, Minas Gerais, Brazil, and other occurrences
- Pyrophyllite dehydroxylation process by First Principles calculations
- Plagioclase from planetary basalts: Chemical signatures that reflect planetary volatile budgets, oxygen fugacity, and styles of igneous differentiation
- The structure of the manganese oxide on the sheath of the bacterium Leptothrix discophora: An XAFS study
- An X-ray Rietveld study of piemontite on the join Ca2Al3Si3O12(OH)–Ca2Mn33+Si3O12(OH) formed by hydrothermal synthesis
- Raman spectroscopy of basic copper(II) and some complex copper(II) sulfate minerals: Implications for hydrogen bonding
- Incorporation of sodium into the chlorite structure: the crystal structure of glagolevite, Na(Mg,Al)6[Si3AlO10](OH,O)8
- Cation disorder in dolomite, CaMg(CO3)2, and its influence on the aragonite + magnesite ↔ dolomite reaction boundary
Articles in the same Issue
- Hydroxyl in omphacites and omphacitic clinopyroxenes of upper mantle to lower crustal origin beneath the Siberian platform
- Structural variations induced by difference of the inert pair effect in the stibnite-bismuthinite solid solution series (Sb,Bi)2S3
- Hydrogen solubility and speciation in natural, gem-quality chromian diopside
- Ultrastructure, aggregation-state, and crystal growth of biogenic nanocrystalline sphalerite and wurtzite
- Impactite from Henbury, Australia
- Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and “groutellite”
- Hydrothermal synthesis and crystal chemistry of the new strontium uranyl selenites, Sr[(UO2)3(SeO3)2O2]⋅4H2O and Sr[UO2(SeO3)2]
- Study of cation order-disorder in MgAl2O4spinel by in situ neutron diffraction up to 1600 K and 3.2 GPa
- Magnetic granulometry from equilibrium magnetization measurements: Mineral magnetometry of superparamagnetic particles and application to synthetic ferrihydrites
- Hydroxide in kyanite: A quantitative determination of the absolute amount and calibration of the IR spectrum
- Analysis of uranyl-bearing phases by EXAFS spectroscopy: Interferences, multiple scattering, accuracy of structural parameters, and spectral differences
- X-ray diffraction evidence for a monoclinic form of stibnite, Sb2S3, below 290 K
- Sulfur species at chalcopyrite (CuFeS2) fracture surfaces
- Dehydration and rehydration process in boggsite: An in situ X-ray single-crystal study
- Empressite, AgTe, from the Empress-Josephine mine, Colorado, U.S.A.: Composition, physical properties, and determination of the crystal structure
- Correlation of pH-dependent surface interaction forces to amino acid adsorption: Implications for the origin of life
- A near-infrared spectroscopic study of hydroxyl in natural chondrodite
- High-pressure elasticity of a natural magnetite crystal
- Isotopic and chemical alteration of zircon by metamorphic fluids: U-Pb age depth-profiling of zircon crystals from Barrowʼs garnet zone, northeast Scotland
- A novel approach to determine high-pressure high-temperature fluid and melt compositions using diamond-trap experiments
- Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, Galiléia, Minas Gerais, Brazil, and other occurrences
- Pyrophyllite dehydroxylation process by First Principles calculations
- Plagioclase from planetary basalts: Chemical signatures that reflect planetary volatile budgets, oxygen fugacity, and styles of igneous differentiation
- The structure of the manganese oxide on the sheath of the bacterium Leptothrix discophora: An XAFS study
- An X-ray Rietveld study of piemontite on the join Ca2Al3Si3O12(OH)–Ca2Mn33+Si3O12(OH) formed by hydrothermal synthesis
- Raman spectroscopy of basic copper(II) and some complex copper(II) sulfate minerals: Implications for hydrogen bonding
- Incorporation of sodium into the chlorite structure: the crystal structure of glagolevite, Na(Mg,Al)6[Si3AlO10](OH,O)8
- Cation disorder in dolomite, CaMg(CO3)2, and its influence on the aragonite + magnesite ↔ dolomite reaction boundary