Article
Licensed
Unlicensed
Requires Authentication
Al,Si order in the crystal structure of α-eucryptite (LiAlSiO4)
-
Peter Daniels
and
Colin A. Fyfe
Published/Copyright:
March 26, 2015
Abstract
The crystal structure of α-eucryptite, LiAlSiO4, is reinvestigated by combining 29Si NMR spectroscopy and single-crystal X-ray diffraction. The silicon coordination in α-eucryptite of three different samples (two of natural, one of synthetic origin) is shown to be identical on a local scale by means of 29Si MAS NMR spectroscopy. This method also suggests a well ordered arrangement of Si and Al within the crystal structure of α-eucryptite and the presence of two symmetrically non-equivalent sites for silicon. The refinement of the structure of a natural crystal using single-crystal X-ray diffraction confirms these observations and demonstrates the presence of long-range Al-Si order and the acentric space group R3.
Received: 1999-9-14
Accepted: 2000-10-12
Published Online: 2015-3-26
Published in Print: 2001-2-1
© 2015 by Walter de Gruyter Berlin/Boston
You are currently not able to access this content.
You are currently not able to access this content.
Articles in the same Issue
- Partitioning of Sr between coexisting minerals of the hollandite- and piemontite-groups in a quartz-rich schist from the Sanbagawa metamorphic belt, Japan
- Crystallization processes in migmatites
- Amblygonite-montebrasite solid solutions as monitors of fluorine in evolved granitic and pegmatitic melts
- Reduction of water loss from gold-palladium capsules during piston-cylinder experiments by use of pyrophyllite powder
- Trace-element partitioning between immiscible lunar melts: An example from naturally occurring lunar melt inclusions
- Assemblages with titanite (CaTiOSiO4), Ca-Mg-Fe olivine and pyroxenes, Fe-Mg-Ti oxides, and quartz: Part I. Theory
- Assemblages with titanite (CaTiOSiO4), Ca-Mg-Fe olivine and pyroxenes, Fe-Mg-Ti oxides, and quartz: Part II. Application
- The stability of clinopyroxene in the system CaO-MgO-SiO2-TiO2 (CMST)
- Ordering kinetics of Mg-Fe2+ exchange in a Wo43En46Fs11 augite
- Al,Si order in the crystal structure of α-eucryptite (LiAlSiO4)
- TEM-EDX study of weathered layers on the surface of volcanic glass, bytownite, and hypersthene in volcanic ash from Sakurajima volcano, Japan
- Electron microscopic study of the dehydration of diaspore
- Crystal properties and energetics of synthetic kaolinite
- Structures and energies of AlOOH and FeOOH polymorphs from plane wave pseudopotential calculations
- XPS measurement of fivefold and sixfold coordinated sulfur in pyrrhotites and evidence for millerite and pyrrhotite surface species
- Structure of synthetic 6-line ferrihydrite by electron nanodiffraction
- Atomic structures of planar defects in oxybiotite
- Potassium hydrogen disilicate: A possible model compound for 17O NMR spectra of hydrous silicate glasses
- Strain analysis of phase transitions in (Ca,Sr)TiO3 perovskites
- Triclinic liddicoatite and elbaite in growth sectors of tourmaline from Madagascar
- Letter. A simple inorganic process for formation of carbonates, magnetite, and sulfides in martian meteorite ALH84001
Articles in the same Issue
- Partitioning of Sr between coexisting minerals of the hollandite- and piemontite-groups in a quartz-rich schist from the Sanbagawa metamorphic belt, Japan
- Crystallization processes in migmatites
- Amblygonite-montebrasite solid solutions as monitors of fluorine in evolved granitic and pegmatitic melts
- Reduction of water loss from gold-palladium capsules during piston-cylinder experiments by use of pyrophyllite powder
- Trace-element partitioning between immiscible lunar melts: An example from naturally occurring lunar melt inclusions
- Assemblages with titanite (CaTiOSiO4), Ca-Mg-Fe olivine and pyroxenes, Fe-Mg-Ti oxides, and quartz: Part I. Theory
- Assemblages with titanite (CaTiOSiO4), Ca-Mg-Fe olivine and pyroxenes, Fe-Mg-Ti oxides, and quartz: Part II. Application
- The stability of clinopyroxene in the system CaO-MgO-SiO2-TiO2 (CMST)
- Ordering kinetics of Mg-Fe2+ exchange in a Wo43En46Fs11 augite
- Al,Si order in the crystal structure of α-eucryptite (LiAlSiO4)
- TEM-EDX study of weathered layers on the surface of volcanic glass, bytownite, and hypersthene in volcanic ash from Sakurajima volcano, Japan
- Electron microscopic study of the dehydration of diaspore
- Crystal properties and energetics of synthetic kaolinite
- Structures and energies of AlOOH and FeOOH polymorphs from plane wave pseudopotential calculations
- XPS measurement of fivefold and sixfold coordinated sulfur in pyrrhotites and evidence for millerite and pyrrhotite surface species
- Structure of synthetic 6-line ferrihydrite by electron nanodiffraction
- Atomic structures of planar defects in oxybiotite
- Potassium hydrogen disilicate: A possible model compound for 17O NMR spectra of hydrous silicate glasses
- Strain analysis of phase transitions in (Ca,Sr)TiO3 perovskites
- Triclinic liddicoatite and elbaite in growth sectors of tourmaline from Madagascar
- Letter. A simple inorganic process for formation of carbonates, magnetite, and sulfides in martian meteorite ALH84001
