The vibrational spectra of BaMg(CO3)2 (norsethite)
Authors:
- Michael E. BöttcherMBMichael E. Böttcher
- Peer-Lennart GehlkenPGPeer-Lennart Gehlken
- Henrik SkogbyHSHenrik Skogby
- Christian ReutelCRChristian Reutel
- 1 April 1997
- journal article
- Published by Mineralogical Society in Mineralogical Magazine
- Vol. 61 (405) , 249-256
Abstract
The FTIR spectra of synthetic BaMg(CO3)2 (norsethite) are measured at ambient temperature and atmospheric pressure, and the influence of formation conditions on the FTIR spectra is investigated. The results are compared with those for natural norsethite from Långban (Sweden) and Rosh Pinah (Namibia). The Raman spectrum of synthetic norsethite is reported, too. A number of first-order internal modes of the carbonate ion group (ν1, ν2, ν3, ν4) are found to be infrared and Raman active. Additonally, the (ν1+ν3) and (ν1+ν4) combination modes and the (2*ν2) overtone are observed in the FTIR and Raman spectrum, respectively. The carbon isotopic-shift coefficient for ν2 due to the substitution of 12C by 13C (ν2(13CO32-)/ν2(12CO32-) = 0.971 ± 0.002), observed by FTIR spectroscopy, agrees with the theoretical value of 0.969.Keywords
This publication has 16 references indexed in Scilit:
- Characterization of inorganic and biogenic magnesian calcites by Fourier Transform infrared spectroscopySolid State Ionics, 1997
- Synthesis of mixed-metal carbonates by grindingSolid State Ionics, 1989
- The solubility of BaCO3(cr) (witherite) in CO2-H2O solutions between 0 and 90°C, evaluation of the association constants of BaHCO3+(aq) and BaCO30(aq) between 5 and 80°C, and a preliminary evaluation of the thermodynamic properties of Ba2+(aq)Geochimica et Cosmochimica Acta, 1986
- Chemical controls on the precipitation of mineral analogues of dolomite: The sulfate enigmaGeology, 1986
- Isotopic analyses based on the mass spectra of carbon dioxideAnalytical Chemistry, 1985
- Zuordnung einer Kombinationsbande in den IR‐Spektren von Carbonaten mit Hilfe von IsotopenmarkierungenZeitschrift für anorganische und allgemeine Chemie, 1970
- Die wirkung schwerer kohlenstoffisotope auf das infrarotspektrum von carbonatenSpectrochimica Acta Part A: Molecular Spectroscopy, 1968
- High-resolution, temperature-dependent spectra of calciteSpectrochimica Acta, 1958
- Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxideGeochimica et Cosmochimica Acta, 1957
- On the Isotopic Chemistry of Carbonates and a Paleotemperature ScaleThe Journal of Chemical Physics, 1950