Publication
Reference
Rashchenko Sergey V., Goryainov Sergey V., Romanenko Alexander V., Golovin Alexander V., Korsakov Andrey V., Moine Bertrand N., Mikhno Anastasia O. (2017). High-pressure Raman study of nyerereite from Oldoinyo Lengai. J. Raman Spectrosc., 48, 1438 - 1442.
Names
  • Sergey V. Rashchenko
  • Sergey V. Goryainov
  • Alexander V. Romanenko
  • Alexander V. Golovin
  • Andrey V. Korsakov
  • Bertrand N. Moine
  • Anastasia O. Mikhno
Article and keywords
Title
High-pressure Raman study of nyerereite from Oldoinyo Lengai
Abstract
A rare sodium carbonate nyerereite, $(Na,K)_2Ca(CO_3)_2$, first found in unique natrocarbonatite lava of Oldoinyo Lengai volcano, also attracted a lot of attention as an inclusion phase in mantle minerals formed in the course of deep carbonatite magmatism. We measured the evolution of nyerereite Raman spectra under quasi-hydrostatic compression up to 6.4 GPa using a diamond anvil cell. The ν4($CO_3^{2-}$) band (710 $cm^{-1}$ at ambient pressure) and ν1($CO_3^{2-}$) doublet (1077 and 1086 $cm^{-1}$ at ambient pressure) demonstrated a positive pressure shift with dν/dP irregularities at 0.5 and 3.0 GPa. The obtained calibration was then used for residual pressure measurements in nyerereite-bearing inclusions in olivine from the Udachnaya-East kimberlite.
Keywords
Raman spectroscopy, MIR, high pressure, band position, band width, minerals, carbonates, Nyerereite, Na2Ca(CO3)2, Earth Science
Content
band list data, spectral data, earth sciences
Year
2017
Journal
Journal of Raman Spectroscopy
Volume
48
Number
11
Pages
1438 - 1442
Pages number
5
Document type
article
Publication state
published
Doi
10.1002/jrs.5152
Identifiers