% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Gatta:190048,
      author       = {Gatta, G. Diego and Adamo, Ilaria and Meven, Martin and
                      Lambruschi, Erica},
      title        = {{A} single-crystal neutron and {X}-ray diffraction study of
                      pezzottaite,
                      {C}s({B}e$_{2}${L}i){A}l$_{2}${S}i$_{6}${O}$_{18}$},
      journal      = {Physics and chemistry of minerals},
      volume       = {39},
      number       = {10},
      issn         = {1432-2021},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {FZJ-2015-03007},
      pages        = {829 - 840},
      year         = {2012},
      abstract     = {The chemical composition and the crystal structure of
                      pezzottaite [ideal composition Cs(Be2Li) Al2Si6O18; space
                      group: R3c, a = 15.9615(6) A ° , c = 27.8568(9) A ° ] from
                      the type locality in Ambatovita (central Madagascar) were
                      investigated by electron microprobe analysis in wavelength
                      dispersive mode, thermo-gravimetric analysis,
                      Fourier-transform infrared spectroscopy, single-crystal
                      X-ray (at 298 K) and neutron (at 2.3 K) diffraction. The
                      average chemical formula of the sample of pezzottaite
                      resulted Cs1,Cs2(Cs0.565Rb0.027K0.017)R0.600
                      Na1,Na2(Na0.101Ca0.024)R0.125Be2.078Li0.922 Al1,Al2(Mg0.002
                      Mn0.002Fe0.003Al1.978)R1.985
                      Si1,Si2,Si3(Al0.056Si5.944)R6O18 0.27H2O. The (unpolarized)
                      IR spectrum over the region 3,800–600 cm-1 was collected
                      and a comparison with the absorption bands found in beryl
                      carried out. In particular, two-weak absorption bands
                      ascribable to the fundamental H2O stretching vibrations
                      (i.e. 3,591 and 3,545 cm-1) were observed, despite the
                      mineral being nominally anhydrous. The X-ray and neutron
                      structure refinements showed: (a) a non-significant presence
                      of aluminium, beryllium or lithium at the Si1, Si2 and Si3
                      sites, (b) the absence (at a significant level) of lithium
                      at the octahedral Al1, Al2 and Al3 sites and (c) a partial
                      lithium/beryllium disordering between tetrahedral Be and Li
                      sites.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {550},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {54G - JCNS (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-MLZ)HEIDI-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000310539600006},
      doi          = {10.1007/s00269-012-0539-3},
      url          = {https://juser.fz-juelich.de/record/190048},
}