Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Nuclear magnetic resonance of 7Li and 23Na in zektzerite, NaLiZrSi6O15

  • 48 Accesses

Abstract

The electric field gradient (EFG) tensors of 7Li and 23Na in a zektzerite, NaLiZrSi6O15 single crystal have been determined by the nuclear magnetic resonance technique. The quadrupole coupling constants, e2qQ/h and the asymmetry parameters, η, for 7Li are 119 ± 5 kHz, 0.05 and for 23Na 2.42 ± 0.15 MHz, 0.86 respectively. In both cases, the EFG tensors show the two-fold site-symmetries at the Li- and Na-sites. For 7Li, the magnitude of the quadrupole coupling constant and the principal axis of the EFG tensor reflect the large angular distortion of the [LiO4] tetrahedron. The large quadrupole coupling constant of 23Na indicates a high degree of distortion of the Na coordination polyhedron.

This is a preview of subscription content, log in to check access.

References

  1. Brinkmann D, Staehli JL, Ghose S (1969) Nuclear magnetic resonance of 27Al and 1H in zoisite, Ca2Al3Si3O13(OH). J Chem Phys 51:5128–5133

  2. Brinkmann D, Mali M, Roos J, Schweickert E (1981) Dimensionality effects of Li diffusion in β-eucryptite studied by single crystal Li NMR. Solid State Ionics 5:433–436

  3. Brun E, Hafner S, Hartman P (1960) Elektrische Quadrupol Wechselwirkungen in einigen Feldspäten. Helv Phys Acta 33:495–496

  4. Cohen MH, Reif M (1957) Quadrupole effects in nuclear magnetic resonance studies of solids. Solid State Phys 5:321–438

  5. Cradwick ME, Taylor HFW (1972) The crystal structure of Na2Mg2Si6O15. Acta Crystallogr B 28:3583–3587

  6. Ghose S, Tsang T (1973) Structural dependence of quadrupole coupling constant e2qQ/h for 27Al and crystal field parameter D for Fe3+ in aluminosilicates. Am Mineral 58:748–755

  7. Ghose S, Wan C (1978) Zektzerite, NaLiZrSi6O15: A silicate with six-tetrahedralrepeat double chains. Am Mineral 63:304–310

  8. Johnson O, Nilsen K, S0tofte I (1978) The crystal structure of emeleusite, a novel example of sechser-doppelkette. Z Kristallogr 147:297–306

  9. Phillips BL, Kirkpatrick RJ, Hovis GL (1988) 27Al, 29Si, and 23Na MAS NMR study of an Al, Si ordered alkali feldspar solid solution series. Phys Chem Minerals 16:262–275

  10. Tsang, T, Ghose S (1974) Nuclear magnetic resonance of 27Al in epidote, Ca2Al2(Fe,Al)Si3O12(OH). J Chem Phys 61:414–417

  11. Volkoff GM (1953) Second order nuclear quadrupole effects in single crystals. Can J Phys 31:820–836

  12. Volkoff GM, Petch HE, Smellie DWL (1952) Nuclear quadrupole interaction in single crystals. Can J Phys 30:270–289

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Ghose, S., Brinkmann, D. & Roos, J. Nuclear magnetic resonance of 7Li and 23Na in zektzerite, NaLiZrSi6O15 . Phys Chem Minerals 16, 720–724 (1989). https://doi.org/10.1007/BF00223323

Download citation

Keywords

  • Nuclear Magnetic Resonance
  • Mineral Resource
  • Principal Axis
  • Material Processing
  • Field Gradient